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Page 1352
Trophoblastic giant cells of a mouse blastocyst , after 12 days of cultivation in a Millipore diffusion chamber . The cells are attached to the filter surface , and have been fixed and stained . The multiple nuclei probably result from ...
Trophoblastic giant cells of a mouse blastocyst , after 12 days of cultivation in a Millipore diffusion chamber . The cells are attached to the filter surface , and have been fixed and stained . The multiple nuclei probably result from ...
Page 1545
The cells proliferat- permanent population of special precur- ing pool , owing to the long life span ing in the thymus may be the precur- sor or stem cells continually giving rise of the circulating cells . In the antisors of some of ...
The cells proliferat- permanent population of special precur- ing pool , owing to the long life span ing in the thymus may be the precur- sor or stem cells continually giving rise of the circulating cells . In the antisors of some of ...
Page 1579
30 ° .3 .2 25 ° .3 .2 .1 Dry weight of cells per ml of medium ( mg ) .4 20 ° .1 12.5 ° بي > .2 . .3 2 gradation in metabolic activity occurred . The data obtained from cultures at 4 ° C were seemingly aberrant , but daily observation ...
30 ° .3 .2 25 ° .3 .2 .1 Dry weight of cells per ml of medium ( mg ) .4 20 ° .1 12.5 ° بي > .2 . .3 2 gradation in metabolic activity occurred . The data obtained from cultures at 4 ° C were seemingly aberrant , but daily observation ...
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Contents
LETTERS | 951 |
NEWS AND COMMENT | 979 |
Persistence in Bean Plants Grown in Continuous | 1240 |
4 other sections not shown
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acid activity addition American amount analysis animals appears applied Association cells Center changes chemical complete concentration containing continuous Department designed determined direct effect electron engineering experiments factor field fraction given human Illus important increase indicated Institute interest intern laboratory less light London material means measured meeting ment method minutes Model nature normal Notes observed obtained occur operation organic percent period Physics position possible preparation present Press pressure problems produced range reaction recent recorded References relative reported response samples Science scientific scientists separate shown similar solution specific structure studies suggested Table temperature tion United Univ University virus Washington weight York