title: Karyological investigations of Collembola. Chromosomes of Entomobrya puncteola and Entomobrya nivalis.
mesh_terms: D000818:Animals; D002875:Chromosomes; D004171:Diploidy; D005260:Female; D007313:Insecta; D007621:Karyotyping; D008297:Male; D012737:Sex Factors