Recent human influenza A (H1N1) viruses are closely related genetically to strains isolated in 1950
Nakajima, Katsuhisa, Desselberger, Ulrich, Palese, PeterVolume:
274
Year:
1978
Pages:
6
DOI:
10.1038/274334a0
File:
PDF, 1.24 MB
1978