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N. W. Penn
Researcher at New York State Department of Mental Hygiene
Publications - 2
Citations - 301
N. W. Penn is an academic researcher from New York State Department of Mental Hygiene. The author has contributed to research in topics: DNA & Base (chemistry). The author has an hindex of 2, co-authored 2 publications receiving 291 citations.
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The presence of 5-hydroxymethylcytosine in animal deoxyribonucleic acid.
TL;DR: 5-Hydroxymethylcytosine is demonstrable in mouse and frog brain DNA and in the crude cytidylic acid fractions obtained from RNA hydrolysates of rat brain and liver and by its conversion into 5-hydroxym methyluracil.
Journal ArticleDOI
Quantitative determination of deoxyribonucleic acid in rat brain
N. W. Penn,R. Suwalski +1 more
TL;DR: The amount of DNA obtained by the present method is 80% greater than that reported for rat brain by a previous procedure specific for DNA thymine, indicating that there may be internucleotide linkages in this DNA that are more sensitive to alkali than those of liver or thymus DNA.