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plant hormones
plant hormones

... Nature of Science: Developments in scientific research follow improvements in analysis and deduction - improvements in analytical techniques allowing the detection of trace amounts of substances has led to advances in the understanding of plant hormones and their effect on gene expression. (1.8) ...
Ultrastructural Studies of the Development of Nerves in Hydra
Ultrastructural Studies of the Development of Nerves in Hydra

... exceedingly difficult to obtain serial sections of entire cells. Due to certain structural similarities which will be demonstrated later, it is imperative that for accurate identification of the individual neurons, serial sections containing the nerve cell bodies (perikarya) be examined carefully. F ...
Understanding Your Karyotype
Understanding Your Karyotype

... chromosome has broken, lost material, and rejoined, are called interstitial (pronounced in-ter-STIH-shul) deletions. 3. Mixed-up pieces: chromosomal translocations If someone has these translocations, will their genes be affected? Find out in these examples: ...
here - Ott Lab
here - Ott Lab

... their cells and genetic material. All that remains are two cone-shaped objects made of collagen and other structural proteins, dangling as though in suspended animation. Gilpin, a postdoctoral fellow, is using such protein scaffolds to try to grow a set of bioartificial lungs in the laboratory. Toge ...
Cell adhesion receptors and the control of cell cycle Cell adhesion
Cell adhesion receptors and the control of cell cycle Cell adhesion

... are intimately linked. As integrins bind to ECM, they become clustered in the plane of the cell membrane and associate with a cytoskeletal and signaling complex that promotes the assembly of actin filaments (the α6β4 integrin associates with keratin filaments through the uniquely large β4 cytodomain ...
Hematopoietic-specific expression of MEFV, the gene mutated in
Hematopoietic-specific expression of MEFV, the gene mutated in

... anti-EGFP antibody showed that the cells expressed either the 27-kd EGFP protein or a 127-kd protein that corresponded to the calculated molecular mass of the EGFP-pyrin fusion protein (Figure 5A). Fluorescent microscopy of transiently transfected cells demonstrated a diffuse expression in cells tha ...
Chapter 34 - GEOCITIES.ws
Chapter 34 - GEOCITIES.ws

... 3. What does a tapeworm use its scolex for? A. to reproduce B. to attach itself to its host C. to eliminate excess water D. to force food into its mouth 4. Which of the following is true of most rotifers? F. They are parasitic. G. They live in the soil. H. They feed with the help of cilia. J. They ...
INVESTIGATIONS ON BIOLOGICAL EFFECT OF POLARIZED LIGHT
INVESTIGATIONS ON BIOLOGICAL EFFECT OF POLARIZED LIGHT

... polarized light in a dose of 4 J/cm2 exerted on the plasma membrane of primary embryo fibroblasts after single irradiation as well as after 4-time exposure. The response of cells towards ionizing radiation can be altered in different ways by physical factors (like the quality of radiation, or temper ...
Genetically Engineered Cell Lines: Characterisation and
Genetically Engineered Cell Lines: Characterisation and

... infection, electroporation, and direct microinjection of the vector into the nucleus. Another method, lipofection, uses commercially available cationic liposomes and may result in a higher efficiency, depending on the cell type (15). In the case of retroviral infection, the retroviral vector carryin ...
Homeostasis, Regulation, and Feedback Loops
Homeostasis, Regulation, and Feedback Loops

... shivering, and the rate of cellular metabolism throughout the body. In carrying out these functions, the hypothalamus controls the endocrine system, which sends out chemical signals, known as hormones, which move through the body through the circulatory system. On the other hand, positive feedback i ...
Exam 3 study guide Spring 2011 Lecture 1 Animal Structure and
Exam 3 study guide Spring 2011 Lecture 1 Animal Structure and

... Consider a spherical sea creature 1 mm wide oxygen concentration in normal seawater is sufficient to support low rates of respiration Predicted that oxygen concentration only needs to be 71% of normal levels How about a spherical sea creature 1 cm wide? ...
Human Body
Human Body

... STANDARD 7.L.1.4 Summarize the general functions of the major systems of the human body (digestion, respiration, reproduction, circulation, and excretion) and ways that these systems interact with each other to sustain life. ...
Cell structure and functions - formatted
Cell structure and functions - formatted

... transporters enhance the movement of these substances across plasma membrane: channels, carriers and pumps (Fig.4). While the first two types are involved in passive transport, the last one allows active transport discussed in next subhead. Channels are transmembrane proteins that function as select ...
Respiratory System
Respiratory System

...  Splits into bronchi  About 20 C-shaped cartilage pieces in wall  Posterior made of smooth muscle  Used to prevent collapse ...
Body Cavities and Membranes
Body Cavities and Membranes

...  Organ level – a discrete structure made up of more than one tissue  Organ system – organs working together for a common purpose  Organismal level – the result of all simpler levels working in unison ...
Achieving Desired Product Profile Read More
Achieving Desired Product Profile Read More

... strategy   requires   consideration   of   nutrient   consumption,   by-­‐product   accumulation,   and   the   balance   between  promoting  growth  versus  volumetric  productivity.  The   cell  culture  process  is  next  scaled  up  to  1-­‐3 ...
Lecture Slides
Lecture Slides

...  Organ level – a discrete structure made up of more than one tissue  Organ system – organs working together for a common purpose  Organismal level – the result of all simpler levels working in unison ...
Advantages over Mechanical Dissociation of Cells
Advantages over Mechanical Dissociation of Cells

... monolayers will spontaneously detach as a sheet. This behavior is surprising, as cells grown on regular TCPS will remain attached for hours or days, requiring enzymatic digestion or physical scraping to detach them.[14] This sharp property change due to a thermal transition around physiological temp ...
Bio-ultrasonics Group
Bio-ultrasonics Group

... Physical approaches such as optical trapping, dielectrophoresis, magnetic labelling and ultrasound trapping offer means of manipulating cells in suspension. Ultrasound trapping approaches are studies in our lab with a view to develop new methodologies that can significantly improve the study of biol ...
Attachment 1
Attachment 1

... he made a stack by alternating layers of zinc, blotting paper soaked in salt water and silver. This arrangement was known as a "voltaic pile." The top and bottom layers of the pile must be different metals, as shown. If you attach a wire to the top and bottom of the pile, you can measure a voltage a ...
lect11-4cut
lect11-4cut

... – Lung collapses as air pressure difference between chest cavity and outside kept constant by wound (air flows in and out of wound) ...
Full Text - Harvard University
Full Text - Harvard University

... strengthened by secondary walls with complex patterns of thickening and by impregnation with the polyphenolic polymer lignin. This evolutionary innovation allowed for both whole-plant structural support and resistance to cell collapse under the tension of water transport. It has long been understood ...
1 Plant Physiology I: PLS622 2006 Introduction: Cell division
1 Plant Physiology I: PLS622 2006 Introduction: Cell division

... purportedly solely responsible for acid growth of plant cell walls without cleaving any cell wall constituent. The family of expansin genes in plants is large with different members putatively involved in a diversity of processes that require cell expansion. In Arabidopsis, alterations in the expre ...
repp86: A Human Protein Associated in the Progression of Mitosis
repp86: A Human Protein Associated in the Progression of Mitosis

... mAb was obtained, which stained the same pattern as mAb Ki-S2 in immunohistochemistry. This antibody also recognized immunopurified repp86 in Western blot experiments, indicating that the elicited cDNA actually encodes repp86. Screening of a genomic data bank with the cDNA sequence of repp86 led to ...
learning objectives
learning objectives

... cell division to go out of control. 2. The p53 protein, also called the “Guardian Angel” of the cell, inspects the DNA to make sure it is ready to divide. 3. When this protein detects damaged DNA, it normally activates the cell’s DNA repair mechanisms and delays cell division. 4. About 50% of all ca ...
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Organ-on-a-chip

An organ-on-a-chip (OC) is a multi-channel 3-D microfluidic cell culture chip that simulates the activities, mechanics and physiological response of entire organs and organ systems. It constitutes the subject matter of significant biomedical engineering research, more precisely in bio-MEMS. The convergence of labs-on-chips (LOCs) and cell biology has permitted the study of human physiology in an organ-specific context, introducing a novel model of in vitro multicellular human organisms. One day, they will perhaps abolish the need for animals in drug development and toxin testing.Although multiple publications claim to have translated organ functions onto this interface, the movement towards this microfluidic application is still in its infancy. Organs-on-chips will vary in design and approach between different researchers. As such, validation and optimization of these systems will likely be a long process. Organs that have been simulated by microfluidic devices include the heart, the lung, kidney, artery, bone, cartilage, skin and more.Nevertheless, building valid artificial organs requires not only a precise cellular manipulation, but a detailed understanding of the human body’s fundamental intricate response to any event. A common concern with organs-on-chips lies in the isolation of organs during testing. ""If you don’t use as close to the total physiological system that you can, you’re likely to run into troubles"" says William Haseltine, founder of Rockville, Maryland. Microfabrication, microelectronics and microfluidics offer the prospect of modeling sophisticated in vitro physiological responses under accurately simulated conditions.
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