ScienceJohn Michels (Journalist) 1954 |
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Стр. 305
... appears defi- nitely to be a double helix ; the former probably con- tains 11 nucleotides per turn of the helix . The nucleo- tides appear like a series of rods , inclined to the fiber axis at an angle of about 65 ° , in a sense ...
... appears defi- nitely to be a double helix ; the former probably con- tains 11 nucleotides per turn of the helix . The nucleo- tides appear like a series of rods , inclined to the fiber axis at an angle of about 65 ° , in a sense ...
Стр. 428
... appears that single particles can carry the potentiality of giving rise to particles correspond- ing to both parental types . With influenza viruses , earlier indications of genetic recombination seem now to be best explained on the ...
... appears that single particles can carry the potentiality of giving rise to particles correspond- ing to both parental types . With influenza viruses , earlier indications of genetic recombination seem now to be best explained on the ...
Стр. 811
... appears . The solid line represents males ; the dashed line , females . FREQUENCY 10 . 02 0.3 0.4 DENSITY COEFFICIENT 0.5 0.6 Fig . 3. Reproducibility of the technique . Frequency rep- resents the number of times the stated value appears ...
... appears . The solid line represents males ; the dashed line , females . FREQUENCY 10 . 02 0.3 0.4 DENSITY COEFFICIENT 0.5 0.6 Fig . 3. Reproducibility of the technique . Frequency rep- resents the number of times the stated value appears ...
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AAAS acid activity Agriculture alloxan American animals Association Atomic Energy awarded Biochemistry biological Bureau California Cancer carbon cells Center chairman Chem chemical chemistry College Committee concentration Conference cortisone Department Dept director discussion dose effect electron engineering enzyme experimental experiments fellowships field Foundation gamma rays Geological graphite Harvard Health Illus industrial Institute interest investigation irradiation isatin isotopic Laboratory material measurements Medical meeting ment metacinnabar method mice National neutron nitrogen nuclear nucleic acid observed obtained organization papers percent phototube physics Piltdown plants present president problems produced professor protein radiation radio radioactive rats reactor received recent reported sample saponin School of Medicine Science scientific scientists Section sessions Society solar solution specific sulfaguanidine symposium Table temperature thorium tion tissue triple response triuret U.S. Geological Survey Univ University uranium versity virus Washington WBNS x-ray York zirconium