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The AMF-R tubule is a smooth ilimaquinone
The AMF-R tubule is a smooth ilimaquinone

... and smooth portions (Fig. 7). Of particular interest is the fact that while IQ does not affect the rough portion of the tubule, the smooth portion presents a morphology of interconnected narrow tubules morphologically identical to the tubular clusters described in Fig. 6. Direct connections between ...
Sequential inte ic resistant bacterium
Sequential inte ic resistant bacterium

... in highly efficient antimicrobial activity (Jana et al. 2007). Interestingly, we observed that the death rate of P. aeruginosa increased with increasing concentration of Ag-SiO2NC (13.5 % on exposure to 20 µgmL-1) and attained 100 % mortality with 80 µgmL-1 (Figure 1). Although the antimicrobial mec ...
effeot of moisture stress on submicrosoopic struoture of maize roots
effeot of moisture stress on submicrosoopic struoture of maize roots

... grouped along the cell walls. Such lipid droplets occur also, but less frequently, in the cortical cells. More and larger vacuoles were found in the dehydrated roots than in the controls. Often these vacuoles contain "membrane knots" similar to myelin bodies (Fig. 6). The submicroscopic structure of ...
Biology / Biochemistry News
Biology / Biochemistry News

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Grüning et al. The structural basis for inhibition of triosephosphate
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A major glycoprotein of the nuclear pore complex is a membrane
A major glycoprotein of the nuclear pore complex is a membrane

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Cell Project
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The Ethics of Using Animal Stem Cells - Sound Ideas

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THE MAMMALIAN CELL VIRUS RELATIONSHIP (From the

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Identification and localization of a β‐COP‐like protein involved in the
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ATP-sensitive potassium channels in capillaries isolated from
ATP-sensitive potassium channels in capillaries isolated from

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A Triad of Costimulatory Molecules Synergize to

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Ianello A, Raulet DH. 2013. Immune Surveillance of Unhealthy Cells by Natural Killer Cells. Cold Spring Harbor symposia on quantitative biology.
Ianello A, Raulet DH. 2013. Immune Surveillance of Unhealthy Cells by Natural Killer Cells. Cold Spring Harbor symposia on quantitative biology.

... CHK1 and CHK2. These kinases are often constitutively activated in tumor cells. Accordingly, disruption of ATR, ATM, and/or CHK1 expression caused a decrease in the expression of NKG2D ligands in several tumor cell lines that constitutively express those ligands (Gasser et al. 2005). These data indi ...
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Activation of different myogenic pathways: myf

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... One hopes to fix one's attention on features of the greatest generality, features that are an expression of the organization of matter as it is peculiar to all living matter, and to living matter only, to living protoplasm. Do such features really exist? Take, for example, the socalled excitability ...
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Amitosis

Amitosis (a- + mitosis) is absence of mitosis, the usual form of cell division in the cells of eukaryotes. There are several senses in which eukaryotic cells can be amitotic. One refers to capability for non-mitotic division and the other refers to lack of capability for division. In one sense of the word, which is now mostly obsolete, amitosis is cell division in eukaryotic cells that happens without the usual features of mitosis as seen on microscopy, namely, without nuclear envelope breakdown and without formation of mitotic spindle and condensed chromosomes as far as microscopy can detect. However, most examples of cell division formerly thought to belong to this supposedly ""non-mitotic"" class, such as the division of unicellular eukaryotes, are today recognized as belonging to a class of mitosis called closed mitosis. A spectrum of mitotic activity can be categorized as open, semi-closed, and closed mitosis, depending on the fate of the nuclear envelope. An exception is the division of ciliate macronucleus, which is not mitotic, and the reference to this process as amitosis may be the only legitimate use of the ""non-mitotic division"" sense of the term today. In animals and plants which normally have open mitosis, the microscopic picture described in the 19th century as amitosis most likely corresponded to apoptosis, a process of programmed cell death associated with fragmentation of the nucleus and cytoplasm. Relatedly, even in the late 19th century cytologists mentioned that in larger life forms, amitosis is a ""forerunner of degeneration"".Another sense of amitotic refers to cells of certain tissues that are usually no longer capable of mitosis once the organism has matured into adulthood. In humans this is true of various muscle and nerve tissue types; if the existing ones are damaged, they cannot be replaced with new ones of equal capability. For example, cardiac muscle destroyed by heart attack and nerves destroyed by piercing trauma usually cannot regenerate. In contrast, skin cells are capable of mitosis throughout adulthood; old skin cells that die and slough off are replaced with new ones. Human liver tissue also has a sort of dormant regenerative ability; it is usually not needed or expressed but can be elicited if needed.
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