Regeneration in plants and animals: dedifferentiation
... within dividing callus cells. During post-embryonic development, tissues arise through the action of pluripotent stem cells within structures called meristems. Cells within meristems are small, with dense cytoplasm and small vacuoles. By contrast, quiescent cells within mature tissues that different ...
... within dividing callus cells. During post-embryonic development, tissues arise through the action of pluripotent stem cells within structures called meristems. Cells within meristems are small, with dense cytoplasm and small vacuoles. By contrast, quiescent cells within mature tissues that different ...
Pdf - Text of NPTEL IIT Video Lectures
... Immediately below this glycocalyx is the cell wall. Now, if we see the composition, biochemical composition of the cell wall, we can find that, this cell wall is made up of glycoprotein, which is…One of this example is a murein. Its purpose, purpose is to provide strength and rigidity to the cell; i ...
... Immediately below this glycocalyx is the cell wall. Now, if we see the composition, biochemical composition of the cell wall, we can find that, this cell wall is made up of glycoprotein, which is…One of this example is a murein. Its purpose, purpose is to provide strength and rigidity to the cell; i ...
Forces That Move Ions and Molecules
... the Brownian motion of suspended molecules. At this point the lights are turned o and the room is completely dark. No one can see anyone else or where they are in the room, but they all keep moving. After 15 minutes everyone is told to stop where they are and the lights are turned on. Remember ever ...
... the Brownian motion of suspended molecules. At this point the lights are turned o and the room is completely dark. No one can see anyone else or where they are in the room, but they all keep moving. After 15 minutes everyone is told to stop where they are and the lights are turned on. Remember ever ...
Break of symmetry in regenerating tobacco protoplasts is
... passed the transition to stage 3, which is defined by an ovoid cell shape, compared to only 5% in the non-transformed cell line. Even at day 2 of regeneration, the transgenic lines remained ahead with more than 40% of the cells in stage 3 in comparison to about 25% in the non-transformed cell line. A ...
... passed the transition to stage 3, which is defined by an ovoid cell shape, compared to only 5% in the non-transformed cell line. Even at day 2 of regeneration, the transgenic lines remained ahead with more than 40% of the cells in stage 3 in comparison to about 25% in the non-transformed cell line. A ...
Lysosomal biogenesis and function is critical for necrotic cell death
... death that occurs during stroke in mammals (Hall et al., 1997; Lee et al., 1999; Nicotera et al., 1999). Thus, vertebrates and C. elegans share a death mechanism that involves the hyperactivation of ion channels. These observations are consistent with the hypothesis that a threshold of ion influx is ...
... death that occurs during stroke in mammals (Hall et al., 1997; Lee et al., 1999; Nicotera et al., 1999). Thus, vertebrates and C. elegans share a death mechanism that involves the hyperactivation of ion channels. These observations are consistent with the hypothesis that a threshold of ion influx is ...
Dormancy in non-sporulating bacteria
... which effectively excluded the possibility of multiplication of normal (viable) bacteria in the starved population. However, the starved cells in this study had 100% viability even after 200 h starvation (notwithstanding the decreased cell volume). It was stressed that these cells could not be class ...
... which effectively excluded the possibility of multiplication of normal (viable) bacteria in the starved population. However, the starved cells in this study had 100% viability even after 200 h starvation (notwithstanding the decreased cell volume). It was stressed that these cells could not be class ...
Karyotype - Alvinisd.net
... Translocations: When a portion of one chromosome is transferred to another chromosome. There are two main types of translocations. In a reciprocal translocation, segments from two different chromosomes have been exchanged. In a Robertsonian translocation, an entire chromosome has attached to another ...
... Translocations: When a portion of one chromosome is transferred to another chromosome. There are two main types of translocations. In a reciprocal translocation, segments from two different chromosomes have been exchanged. In a Robertsonian translocation, an entire chromosome has attached to another ...
Cell Membrane Properties
... therefore do not pass readily through the membrane. However, very small molecules that are polar but uncharged, such as water, can pass through the membrane readily. ...
... therefore do not pass readily through the membrane. However, very small molecules that are polar but uncharged, such as water, can pass through the membrane readily. ...
The different shapes of cocci
... tubulin homologue FtsZ, which polymerizes as a ring at the division site and is widely distributed in bacteria (Errington et al., 2003; Goehring & Beckwith, 2005). The recruitment of other division proteins in Escherichia coli and B. subtilis is subordinated to the presence of FtsZ at the division s ...
... tubulin homologue FtsZ, which polymerizes as a ring at the division site and is widely distributed in bacteria (Errington et al., 2003; Goehring & Beckwith, 2005). The recruitment of other division proteins in Escherichia coli and B. subtilis is subordinated to the presence of FtsZ at the division s ...
Molecular anatomy of antigen-specific CD8+ T cell
... Antigen-specific CD8 + T cells are required for the clearance of most viral infections and several cancers. However, it is not clear in vivo whether CD8 + T cells can engage multiple targets simultaneously, engagement results in the formation of an immunologic synapse or molecules involved in CD8 fu ...
... Antigen-specific CD8 + T cells are required for the clearance of most viral infections and several cancers. However, it is not clear in vivo whether CD8 + T cells can engage multiple targets simultaneously, engagement results in the formation of an immunologic synapse or molecules involved in CD8 fu ...
Do Bacteria have Mitotic Spindles, Fusion Tubes and
... of sporulation. These were stained by the acid Giemsa and tannic acid violet techniques (Robinow, 1945; Bisset, 1950), by thionine instead of Giemsa, as recommended by DeLamater & Mudd (1951), or by thionine + thionyl chloride. For the demonstration of basophilic septa, preparations were stained by ...
... of sporulation. These were stained by the acid Giemsa and tannic acid violet techniques (Robinow, 1945; Bisset, 1950), by thionine instead of Giemsa, as recommended by DeLamater & Mudd (1951), or by thionine + thionyl chloride. For the demonstration of basophilic septa, preparations were stained by ...
RtoA links initial cell type choice to the cell cycle in
... involved in these mechanisms are active at the time of starvation but are not required for cell division, the screen was designed to select for genes that are expressed in vegetative cells, and when repressed affect development but not growth. A cDNA library was placed downstream of a vegetative pro ...
... involved in these mechanisms are active at the time of starvation but are not required for cell division, the screen was designed to select for genes that are expressed in vegetative cells, and when repressed affect development but not growth. A cDNA library was placed downstream of a vegetative pro ...
Figure 1 - Philosophical Transactions of the Royal Society B
... the motor protein myosin II to bend the epithelium (figure 1). Apical actomyosin enrichment and contractility have become defining characteristics of apical constriction [13–16]. Regulation of the actomyosin cytoskeleton is complex, but among the numerous regulators, the recruitment of this contract ...
... the motor protein myosin II to bend the epithelium (figure 1). Apical actomyosin enrichment and contractility have become defining characteristics of apical constriction [13–16]. Regulation of the actomyosin cytoskeleton is complex, but among the numerous regulators, the recruitment of this contract ...
division plane orientation in plant cells
... cause and effect relationship between them? When the premitotic nucleus of Adiantum protonema cells was displaced by centrifugation from its normal, apical position, the majority of cells formed a PPB around the displaced nucleus instead of at the apical location (Murata and Wada 1991). Similar resu ...
... cause and effect relationship between them? When the premitotic nucleus of Adiantum protonema cells was displaced by centrifugation from its normal, apical position, the majority of cells formed a PPB around the displaced nucleus instead of at the apical location (Murata and Wada 1991). Similar resu ...
Lab Manual
... behavior of one kind of organisms at a time. Several different methods are used for the isolation of pure culture of microorganisms. These isolation methods usually involve separating microorganisms on a solid medium into individual cells that are then allowed to reproduce clones. A pure culture, on ...
... behavior of one kind of organisms at a time. Several different methods are used for the isolation of pure culture of microorganisms. These isolation methods usually involve separating microorganisms on a solid medium into individual cells that are then allowed to reproduce clones. A pure culture, on ...
Negative control of cell size in the cyanobacterium Synechococcus
... NblS, RpaB and, importantly, key residues required for phosphorylation of these proteins are all essential for cell viability in the obligated photoautotroph S. elongatus [8], suggesting that the phosphorylated form of RpaB mediates functions that are required for growth during standard culture cond ...
... NblS, RpaB and, importantly, key residues required for phosphorylation of these proteins are all essential for cell viability in the obligated photoautotroph S. elongatus [8], suggesting that the phosphorylated form of RpaB mediates functions that are required for growth during standard culture cond ...
Guidleine on potency testing of cell based immunotherapy medicinal
... autologous or allogeneic cells. Immunotherapy of cancer is based on an immune response targeted against tumour-specific/tumour associated antigen(s), leading to destruction of malignant cells. The targeting of interactions between the immune system and the tumour constitute a complex approach of whi ...
... autologous or allogeneic cells. Immunotherapy of cancer is based on an immune response targeted against tumour-specific/tumour associated antigen(s), leading to destruction of malignant cells. The targeting of interactions between the immune system and the tumour constitute a complex approach of whi ...
The Science of Candy!
... Add some candy and allow the color to dissolve. You may test as many colors as you like, but be sure to only use one color of candy in each water puddle. Dip the edge of the coffee filter (or paper towel or napkin) into the colored water. It works best if you fold the paper so that you can dip ...
... Add some candy and allow the color to dissolve. You may test as many colors as you like, but be sure to only use one color of candy in each water puddle. Dip the edge of the coffee filter (or paper towel or napkin) into the colored water. It works best if you fold the paper so that you can dip ...
The Protoplast: Plasma Membrane, Nucleus, and Cytoplasmic
... Based on the degree of internal organization of their cells, two fundamentally distinct groups of organisms are now recognized: prokaryotes and eukaryotes. The prokaryotes (pro, before; karyon, nucleus) are represented by the Archaea and Bacteria, including the cyanobacteria, and the eukaryotes (eu, ...
... Based on the degree of internal organization of their cells, two fundamentally distinct groups of organisms are now recognized: prokaryotes and eukaryotes. The prokaryotes (pro, before; karyon, nucleus) are represented by the Archaea and Bacteria, including the cyanobacteria, and the eukaryotes (eu, ...