Helen A. Greisen

Canine distemper encephalomyelitis: Variation with virus strain

Brian A. Summers, Helen A. Greisen, M. J. G. Appel · Journal of Comparative Pathology · 1984 · 118 citations

Animal Virus, Virus Strain, Veterinary Science +1

Pathogenesis of Canine Bordetellosis

David A. Bemis, Helen A. Greisen, M. J. G. Appel · The Journal of Infectious Diseases · 1977 · 104 citations

Early events in canine distemper demyelinating encephalomyelitis

Brian A. Summers, Helen A. Greisen, M. J. G. Appel · Acta Neuropathologica · 1979 · 100 citations

Early Events, Neurological Disorder, Medicine +6

Status Report: Canine Viral Enteritis

M. J. G. Appel, Barry J. Cooper, Helen A. Greisen et al. · Journal of the American Veterinary Medical Association · 1978 · 90 citations

Veterinary Science, Gastrointestinal Virus, Status Report +3

Canine viral enteritis. I. Status report on corona- and parvo-like viral enteritides.

M. J. G. Appel, B. J. Cooper, Helen A. Greisen et al. · PubMed · 1979 · 80 citations

Canine Viral Enteritis, Parvo-like Virus, Parvo-like Viral Enteritides +14