Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

787 results
  1. NLM Digital Collections - Enzymatic Synthesis of Deoxyribonucleic Acid. VIII. Frequencies of Nearest Neighbor Base ... 
    Publication: American Society for Biochemistry and Molecular Biology, March 1961
    ... guanine to cytosine; the results also furnish experimental evidence for opposite polarity of the two strands of the double helix ...
  2. NLM Digital Collections - Physiological foundations of behavior 
    Publication: New York : Henry Holt and Company, [1924]
    ... the physiological gradient as the primary factor in polarity and symmetry is the only theory which is based on actual evidence from experiment. THE ORIGIN OF SURFACE-INTERIOR PATTERN ...
  3. NLM Digital Collections - Postzygotic Elimination of Genetic Factors in Escherichia coli 
    Publication: National Academy of Sciences (U.S.), June 1954
    ... genetic segments from the persistent dip- loids. Casual evidence’ that the F polarity of the parents determined the direc- tion of ... the gametes would be supererogatory on all present evidence. Table 1 also demonstrates the influence of F polarity on the trend of elimination. A possible mechanism ...
  4. ... to 209. I here refer to them as evidence of the polarity of minute groups. In resuming the consideration of ...
  5. NLM Digital Collections - Possibilities of organism : an address 
    Publication: Washington, D.C. : Mohun Bros., 1878
    ... discovered, during the early stages of embryonic growth, evidences of magnetic polarity. In device, as well as in material, nature ...
  6. ... vol. xxv. I here refer to them as evidence of the polarity of minute groups. In resuming the consideration of ...
  7. ... strongly to mutate in only one way. A polarity effect in two-factor trans crosses, Experimental evidence suggesting a polarized and long-range effect of ...
  8. NLM Digital Collections - A paper 
    Publication: New York : Published by request, 1884
    ... when within the aura of others, by their polarity, according as they are attracted or repulsed. As evidence that the senses of touch and tempera- ture ...
  9. NLM Digital Collections - The senses, five or seven 
    Publication: [New York?] : [publisher not identified], [1889?]
    ... when within the aura of others, by their polarity, according as they are attracted or repulsed. As evidence that the senses of touch and temperature are ...
  10. NLM Digital Collections - Evaluation of Paterson Clorocel Steriliser 
    Publication: Fort Belvoir, Virginia : Engineer Research and Development Laboratories, 1 April 1949
    ... the electrodes. In comparable runs where the electrode polarity was reversed at 5- mlnute intervals, there was no evidence of a similar accumulation. p 7 Sanders, reported ...
first · previous · 1 · 2 · 3 · 4 · 5 · 6 · 7 · 8 · 9 · 10 · next · last