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11.
Cytochrome oxidase complex has been isolated and purified from sea urchin mitochondrial inner membranes. The complex exhibited a discrete number of bands in PAGE and a 17 kDa band was recognized by an anti-human subunit IV antibody. No bands were recognized by an anti-yeast hsp60 antibody and an anti-sea urchin β ATPase subunit.  相似文献   
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The extent to which a particular substrate (scratched glass) affects the distribution of a population ( Oxytricha bifaria ) that settled on it was measured, yielding the following results: (1) the species distinguishes among substrates slightly differing in the quality of their superficial scratches (average dimensions of 2, 2.8, 3.5, 6.5, 17 and 25 μm, respectively); (2) it "chooses" the preferred substrate by adopting specific differential behaviors; and (3) population cell density conditions its overall distribution.  相似文献   
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