title: THE KARYOTYPE OF RANA SYLVATICA AND ITS COMPARISON WITH THE KARYOTYPE OF RANA PIPIENS.
mesh_terms: D000818:Animals; D001001:Anura; D002875:Chromosomes; D006824:Hybridization, Genetic; D059785:Karyotype; D007621:Karyotyping; D011894:Rana pipiens; D012106:Research
keywords: CHROMOSOMES; EXPERIMENTAL LAB STUDY; FROGS; HYBRIDIZATION