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Стр. 761
When certain R factors are present , alone or with an F factor , only a minority of cells produce sex pili . ... ( 36 ) , these observations are the result of the production of a repressor of pilus formation in certain R + strains ...
When certain R factors are present , alone or with an F factor , only a minority of cells produce sex pili . ... ( 36 ) , these observations are the result of the production of a repressor of pilus formation in certain R + strains ...
Стр. 1418
Single - stranded 35S and 20S viral RNA species are synthesized in virus - producing mouse and rat cells transformed by the murine sarcoma virus . A transformed hamster cell line that does not produce virus synthesizes 35S , but not 20S ...
Single - stranded 35S and 20S viral RNA species are synthesized in virus - producing mouse and rat cells transformed by the murine sarcoma virus . A transformed hamster cell line that does not produce virus synthesizes 35S , but not 20S ...
Стр. 1440
In contrast , all four species of respectively , and three populations of an increased energy expenditure in Rigidella ( bird - flowered ) grow at high P. barbatus Nutt , from Durango had terms of increased pollen production ...
In contrast , all four species of respectively , and three populations of an increased energy expenditure in Rigidella ( bird - flowered ) grow at high P. barbatus Nutt , from Durango had terms of increased pollen production ...
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activity American analysis animals Apollo 14 appears application associated behavior brain cause cells complete concentration containing cost course culture Department determined drug effect engineering evidence example experiments factors field frequency function given glucose human hurricane illus important increase indicated Institute interest International laboratory less major males material means measured mechanism ment methods natural normal observed obtained occur organization percent period physical population position possible present Press pressure probably problems production range References reported response samples Science scientific scientists seeding Service shown similar social solution species strain structure studies suggest surface Table temperature tion United University York