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Стр. 1344
During centrifugation the membrane material separates into two major fractions ( Fig . 1a , a zone at the top of the barrier , devoid of aggregates and consisting of two closely associated bands , and a heavily clumped pellet .
During centrifugation the membrane material separates into two major fractions ( Fig . 1a , a zone at the top of the barrier , devoid of aggregates and consisting of two closely associated bands , and a heavily clumped pellet .
Стр. 1349
A number of different concentrations of each material were used ; saturated phenol solution was the only material which produced significant tubal obstruction . Phenol was not studied further , however , because obstruction could not be ...
A number of different concentrations of each material were used ; saturated phenol solution was the only material which produced significant tubal obstruction . Phenol was not studied further , however , because obstruction could not be ...
Стр. 1713
Such material has been found in surface outcrop at only two places , however , probably because it is easily eroded . Before X - ray diffraction came into use it had been assumed that practically all the black material was Carbonaceous ...
Such material has been found in surface outcrop at only two places , however , probably because it is easily eroded . Before X - ray diffraction came into use it had been assumed that practically all the black material was Carbonaceous ...
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