= N. C. Pedersen
{c}
<N. C. Pedersen> coauthored the 1987 isolation study of the feline <retrovirus> associated with an immunodeficiency-like syndrome, now discussed under <feline immunodeficiency virus>. The work combined isolation of a T-lymphotropic agent, <antibody> evidence and experimental transmission, connecting a clinical observation with a testable infectious explanation.<Isolation of a T-lymphotropic virus from domestic cats with an immunodeficiency-like syndrome by N. C. Pedersen and others>[Science235,790–793; Abstract and indexed byline]{ref}
In the studied cattery, 10 of25 cats showing ill health were seropositive, compared with1 of18 apparently normal cats. The respective proportions are $40\%$ and about $5.6\%$. This contrast is an association within that sampled group, rather than a population-wide prevalence estimate. Kittens inoculated with <blood> or plasma from naturally infected animals subsequently developed the reported syndrome features, adding a different kind of evidence from the cross-sectional counts.<Isolation of a T-lymphotropic virus from domestic cats with an immunodeficiency-like syndrome by N. C. Pedersen and others>[Abstract, serologic counts and kitten inoculation]{ref}
The experimental design illustrates why isolating a <virus>, detecting an <antibody> response and measuring disease after inoculation answer related but different questions. The verified contribution here is this coauthored study; the original initial-only author spelling is preserved.
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