TY  - GEN
AU  - Feldman,D B
AU  - Ross,P W
TI  - Methods for obtaining neonates of known age from the Virginia opossum (Didelphis marsupialis virginiana)
SN  - 0023-6764
PY  - 1975///1021
KW  - Age Factors
KW  - Animals
KW  - Animals, Newborn
KW  - Estrus
KW  - Female
KW  - Fertilization
KW  - Labor, Obstetric
KW  - Lactation
KW  - Litter Size
KW  - Male
KW  - Opossums
KW  - physiology
KW  - Pregnancy
KW  - Spermatozoa
KW  - cytology
KW  - Vaginal Smears
N1  - Publication Type: Journal Article
ER  -