Author Unknown's CURRENT TOPICS IN DEVELOPMNTL BIOLOGY V6, Volume 6 PDF

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ISBN-10: 0080584292

ISBN-13: 9780080584294

ISBN-10: 0121531066

ISBN-13: 9780121531065

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Extra resources for CURRENT TOPICS IN DEVELOPMNTL BIOLOGY V6, Volume 6

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Then, i t changes in form and extends to other places in the cell. Specific ionic uptake and release by mitochondria is so well known as to need no documentation. If specific ionic changes are required for membrane alterations (Kavanau, 1965), then the mitochondrion is a likely candidate to provide them. The flattening of the mitochondrion may generate increased surface area to maximize a membrane mediated flow of substances. When the double membrane around the nuclear cap fragments, its inner and outer unit membranes fuse to form vesicles derived from both membranes.

A) Phase contrast view of amoeboid spore. , "side body"). (B) Phase contrast view of a spore swollen by incubation a t O-l"C, showing nuclear cap, nucleus with nucleolus, swollen mitochondrion (arrow) with refractile lipid bodies (white dots) on surface and numerous gamma particles (small dark dots i n peripheral cytoplasm). ( C ) Same spore seen in (B), but after flagellum was absorbed while in the cold; note shift in position of nuclear apparatus toward center of cell. (D) Phase contrast view of an encysting spore decreasing in volume just after flagellar retraction ; note typical vacuoles.

Goldstein, 1964). I n Eq. ( l ) , R = decimal fraction of encysted spores in the suspension; p = population density in spores/ml ( x 10-O) ; a and b are constants determined w 0 TABLE I1 REGRESSION EQUATIONS FOR SELFINHIBITION IN DIFFERENT ENVIRONMENTAL SYSTEMS System No. 8 22 26 R R R R R R R R R R R R R R R R R R + Correlation coef. 898 - 0 . 900 - 0 . 991 - 0 . 985 - 0 . 989 - 0 . 885 - 0 . 702 - 0 . 757 - 0 . 863 -0. 576 = = = = = = Medium GC is defined in legend to Fig. 5. Medium GM differsfrom medium GC in that Ca is replaced by an equivalent amount of Mg.

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CURRENT TOPICS IN DEVELOPMNTL BIOLOGY V6, Volume 6 by Author Unknown


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