Praxis Review for Science
... expect to find tendons, ligaments and cartilage classified as connective tissue. In addition, the category of connective tissue also contains bodywide tissues such as bone, blood and lymph. In most cases, the cells that make up the tissue are surrounded by some kind of matrix or material characteris ...
... expect to find tendons, ligaments and cartilage classified as connective tissue. In addition, the category of connective tissue also contains bodywide tissues such as bone, blood and lymph. In most cases, the cells that make up the tissue are surrounded by some kind of matrix or material characteris ...
LIGHT MICROSCOPIC STUDY OF PORELLA PLATYPHYLLA (L
... on P. platyphylla is that we wanted to see whether oil bodies were coloured or not. The method was not suitable for P. platyphylla. The relatively high alcohol content of Sudan III significantly damaged the liverwort cells (Photo 2) and the oil bodies too. On the other hand, it can’t be excluded tha ...
... on P. platyphylla is that we wanted to see whether oil bodies were coloured or not. The method was not suitable for P. platyphylla. The relatively high alcohol content of Sudan III significantly damaged the liverwort cells (Photo 2) and the oil bodies too. On the other hand, it can’t be excluded tha ...
Notes - Pierce College
... -Matrix fibers of densely-packed collagen (provides strength) -Ground substance of chondroitin sulfate which provides resilience—the ability to return to normal shape after being stretched. -Avascular: cartilage does not host any capillaries, thus it is very slow to heal. All other connective tissue ...
... -Matrix fibers of densely-packed collagen (provides strength) -Ground substance of chondroitin sulfate which provides resilience—the ability to return to normal shape after being stretched. -Avascular: cartilage does not host any capillaries, thus it is very slow to heal. All other connective tissue ...
Microbiology
... a Gram stain is done. The Gram stain is a technique for staining and detecting bacteria and yeasts. It is the most commonly performed procedure in the clinical microbiology laboratory. Four reagents are used to perform a Gram stain: crystal violet, Gram's iodine, acetone-alcohol, and safranin. ...
... a Gram stain is done. The Gram stain is a technique for staining and detecting bacteria and yeasts. It is the most commonly performed procedure in the clinical microbiology laboratory. Four reagents are used to perform a Gram stain: crystal violet, Gram's iodine, acetone-alcohol, and safranin. ...
Gram Positives and Gram Negatives
... • Gram positive bacteria appear purple • Gram negative bacteria release the first dye used and appear red from the second (counter) dye • Knowing Gram positive or Gram negative helps prescribe appropriate antibiotic • The stain is named for H. C. J. Gram, a Danish physician who invented it in 1884. ...
... • Gram positive bacteria appear purple • Gram negative bacteria release the first dye used and appear red from the second (counter) dye • Knowing Gram positive or Gram negative helps prescribe appropriate antibiotic • The stain is named for H. C. J. Gram, a Danish physician who invented it in 1884. ...
... S-I 00 + delicate filamentous structures seen in the regenerating PDL, thus indirectly indicates regenerating peripheral myelinated nerves. The antibody directed against the EGF receptor reacts specifically with the 170 kDa EGF receptor protein in human cells by Western blotting analysis. It can als ...
Local opening of the DNA double helix in eukaryotic cells detected by
... increase in acid-treated cells. In heterochromatin containing A+T-rich DNA, acid treatment should induce the strongest increase in staining due to high DNA density in such regions and the preferential binding of Os,bipy to thymine. In fact, cells treated with 45% acetic acid after fixation in methan ...
... increase in acid-treated cells. In heterochromatin containing A+T-rich DNA, acid treatment should induce the strongest increase in staining due to high DNA density in such regions and the preferential binding of Os,bipy to thymine. In fact, cells treated with 45% acetic acid after fixation in methan ...
Cell wall
... weights substances, RNA and approximately 20 000 ribosomes per cell. Bacteria have 70S ribosomes comprising 30S and 50S subunits. Bacterial ribosomes function as the organelles for protein synthesis. The cytoplasm is also frequently used to store reserve substances (glycogen depots, polymerized meta ...
... weights substances, RNA and approximately 20 000 ribosomes per cell. Bacteria have 70S ribosomes comprising 30S and 50S subunits. Bacterial ribosomes function as the organelles for protein synthesis. The cytoplasm is also frequently used to store reserve substances (glycogen depots, polymerized meta ...
The Gram Reaction and Cell Composition: Nucleic
... characteristics of the Gram-positive aerobic spore-forming rods. The fact that B . brevis lacks XSP adds considerable weight to the correlation between XSP content and Gram staining, as does also the fact that ‘young’ Grampositive cultures of N . catarrhalis contain XSP, whereas ‘old ’ Gram-negative ...
... characteristics of the Gram-positive aerobic spore-forming rods. The fact that B . brevis lacks XSP adds considerable weight to the correlation between XSP content and Gram staining, as does also the fact that ‘young’ Grampositive cultures of N . catarrhalis contain XSP, whereas ‘old ’ Gram-negative ...
Altered stress fibers and integrin expression in the Malpighian
... (Fig. 1). At restrictive temperature, epithelial cells of col4a1 mutant developed actin stress fibers visible already at three days of incubation (Fig. 2, A4, white arrow) that became abundant within the cytoplasm by day 18 (Fig. 2, A5). Results were similar to cytoskeletal rearrangement reported for ...
... (Fig. 1). At restrictive temperature, epithelial cells of col4a1 mutant developed actin stress fibers visible already at three days of incubation (Fig. 2, A4, white arrow) that became abundant within the cytoplasm by day 18 (Fig. 2, A5). Results were similar to cytoskeletal rearrangement reported for ...
Histotechniques
... Fixation arrests autolysis and bacterial decomposition and stabilizes the cellular and tissue constituents so that they withstand the subsequent stages of tissue processing. Aside from these requirements for the production of tissue sections, increasing interest in cell constituents and the extensiv ...
... Fixation arrests autolysis and bacterial decomposition and stabilizes the cellular and tissue constituents so that they withstand the subsequent stages of tissue processing. Aside from these requirements for the production of tissue sections, increasing interest in cell constituents and the extensiv ...
Picornavirus-like Structures in Acute Dermatomyositis
... of identical dense subunits (Figs. 3 and 4) with an average diameter of 150 to 200 A, some of which were arranged in parallel rows. In favorable sections, these subunit particles showed a symmetrical arrangement of a hexagonal or triangular pattern (Fig. 5). The particles had a high electron density ...
... of identical dense subunits (Figs. 3 and 4) with an average diameter of 150 to 200 A, some of which were arranged in parallel rows. In favorable sections, these subunit particles showed a symmetrical arrangement of a hexagonal or triangular pattern (Fig. 5). The particles had a high electron density ...
observing bacteria in yogurt
... What would the appearance of the bacteria look like? Do you think there will be an abundant amount of bacteria? What do you think methylene blue will help you see? Procedure: 1. Heat a clean microscope slide gently by passing it several times above the flame of a Bunsen burner. 2. When the slide is ...
... What would the appearance of the bacteria look like? Do you think there will be an abundant amount of bacteria? What do you think methylene blue will help you see? Procedure: 1. Heat a clean microscope slide gently by passing it several times above the flame of a Bunsen burner. 2. When the slide is ...
ABC - Jordan High School
... 1) Some connective tissue cells are specific to connective tissues. Thus, when you “see them” in a tissue sample, it usually means you’re looking at a connective tissue sample. These include fibroblasts and adipocytes. 2) Other connective tissue cells are found only in a specific form of connective ...
... 1) Some connective tissue cells are specific to connective tissues. Thus, when you “see them” in a tissue sample, it usually means you’re looking at a connective tissue sample. These include fibroblasts and adipocytes. 2) Other connective tissue cells are found only in a specific form of connective ...
Phalloidin
... CF™ dyes are a series of next-generation fluorescent dyes developed at Biotium to have combined advantages in brightness, photostability, and water solubility compared to other fluorescent dyes. Fluorescently labeled phalloidins stain F-actin at nanomolar concentrations (1-3). Labeled phalloidins ha ...
... CF™ dyes are a series of next-generation fluorescent dyes developed at Biotium to have combined advantages in brightness, photostability, and water solubility compared to other fluorescent dyes. Fluorescently labeled phalloidins stain F-actin at nanomolar concentrations (1-3). Labeled phalloidins ha ...
Dyes and dyeing
... dye was a brilliant fuchsia color, but faded easily. Since that time, a great number of synthetic dyes have been manufactured and their resistance to running and fading has been almost eliminated. Almost all garments purchased today are dyes with synthetic dyes. Dyes used for fabric such as cotton, ...
... dye was a brilliant fuchsia color, but faded easily. Since that time, a great number of synthetic dyes have been manufactured and their resistance to running and fading has been almost eliminated. Almost all garments purchased today are dyes with synthetic dyes. Dyes used for fabric such as cotton, ...
C. Dermis
... 1.31) are connected with each other in the dermal deep layer to form a horizontal network (subcutaneous plexus). With numerous branches ascending from the subcutaneous plexuses, the arteries form a second network in the papillary lower layer (subpapillary plexus). The arterioles ascend through the p ...
... 1.31) are connected with each other in the dermal deep layer to form a horizontal network (subcutaneous plexus). With numerous branches ascending from the subcutaneous plexuses, the arteries form a second network in the papillary lower layer (subpapillary plexus). The arterioles ascend through the p ...
Stereoscopic microscopes
... Microscopes allow magnified images of illuminated specimens to be viewed using 2 lenses (an objective and an eyepiece lens). Microscopes that use two lenses are called compound microscopes. ...
... Microscopes allow magnified images of illuminated specimens to be viewed using 2 lenses (an objective and an eyepiece lens). Microscopes that use two lenses are called compound microscopes. ...
Tissues
... tissues, and forms structural models for developing bones. Cartilage matrix is abundant and composed of collagenous fibers embedded in gel like ground substance. Ground substance is rich in protein-polysaccharide substance and contains a large amount of water. Cartilage cells or chondrocytes occupy ...
... tissues, and forms structural models for developing bones. Cartilage matrix is abundant and composed of collagenous fibers embedded in gel like ground substance. Ground substance is rich in protein-polysaccharide substance and contains a large amount of water. Cartilage cells or chondrocytes occupy ...
Chapter 4 Tissue Level of Organization Lecture Outline
... 1.) Tissue is damaged by an external factor. Damaged cells release prostaglandins and undergo necrosis, both will trigger the inflammatory response. 2.) Mast cells release histamine in response to change in the local environment (prostaglandins, necrosis). Histamine triggers vasodilation: smooth mus ...
... 1.) Tissue is damaged by an external factor. Damaged cells release prostaglandins and undergo necrosis, both will trigger the inflammatory response. 2.) Mast cells release histamine in response to change in the local environment (prostaglandins, necrosis). Histamine triggers vasodilation: smooth mus ...
Lab 14
... -pseudostratified columnar: only a single layer because the basal face of every cell contacts the basement membrane -nuclei are at varying levels - appearance of multiple layers -exposed apical surface typically bears cilia e.g. respiratory epithelium ...
... -pseudostratified columnar: only a single layer because the basal face of every cell contacts the basement membrane -nuclei are at varying levels - appearance of multiple layers -exposed apical surface typically bears cilia e.g. respiratory epithelium ...
Connective Tissue
... -pseudostratified columnar: only a single layer because the basal face of every cell contacts the basement membrane -nuclei are at varying levels - appearance of multiple layers -exposed apical surface typically bears cilia e.g. respiratory epithelium ...
... -pseudostratified columnar: only a single layer because the basal face of every cell contacts the basement membrane -nuclei are at varying levels - appearance of multiple layers -exposed apical surface typically bears cilia e.g. respiratory epithelium ...
Make Your Own Solar Cell (1 hour version)_2pg
... 3. Use a graphite pencil to cover the conductive side with a thin layer of graphite (conductive carbon) and remove the tape. 4. The carbon coating is fragile and can be easily rubbed off. Be careful not to touch it. This carbon acts as a catalyst for converting triiodide to iodide. A catalyst is a s ...
... 3. Use a graphite pencil to cover the conductive side with a thin layer of graphite (conductive carbon) and remove the tape. 4. The carbon coating is fragile and can be easily rubbed off. Be careful not to touch it. This carbon acts as a catalyst for converting triiodide to iodide. A catalyst is a s ...
Synthesis of a Callosic Substance during Rhizoid Differentiation in
... then extends via tip growth. An elaborate rosette-shaped rhizoid is finally formed (Nagata 1973a, Inoue et al. 1999). In the present study, we found that a callosic substance is formed during rhizoid differentiation in Spirogyra. Spirogyra collected from a stream near our laboratory was cultured, as ...
... then extends via tip growth. An elaborate rosette-shaped rhizoid is finally formed (Nagata 1973a, Inoue et al. 1999). In the present study, we found that a callosic substance is formed during rhizoid differentiation in Spirogyra. Spirogyra collected from a stream near our laboratory was cultured, as ...
Staining
Staining is an auxiliary technique used in microscopy to enhance contrast in the microscopic image. Stains and dyes are frequently used in biology and medicine to highlight structures in biological tissues for viewing, often with the aid of different microscopes. Stains may be used to define and examine bulk tissues (highlighting, for example, muscle fibers or connective tissue), cell populations (classifying different blood cells, for instance), or organelles within individual cells.In biochemistry it involves adding a class-specific (DNA, proteins, lipids, carbohydrates) dye to a substrate to qualify or quantify the presence of a specific compound. Staining and fluorescent tagging can serve similar purposes. Biological staining is also used to mark cells in flow cytometry, and to flag proteins or nucleic acids in gel electrophoresis.Simple staining is staining with only one stain/dye. There are various kinds of multiple staining, many of which are examples of counterstaining, differential staining, or both, including double staining and triple staining. Staining is not limited to biological materials, it can also be used to study the morphology of other materials for example the lamellar structures of semi-crystalline polymers or the domain structures of block copolymers.