Spontaneous Tumors in the Mongolian Gerbil (<I>Meriones unguiculatus</I>)

Placental Development in the Mongolian Gerbil

Early gerbil development was studied from days 4 through 12 of gestation. Implantation occurs on day 8 in a shallow antimesometrial implantation crypt. The proamniotic cavity forms from an invagination of basal trophoblast and a folding together of the rim of the cup thus produced. The approximation of this rim gives rise to the ectoplacental cone. The further development and expansion of the e...

Cytology of the bone marrow in the Mongolian gerbil.

Heterophils were the most numerous cells (39%), followed by the normoblasts (27%) and lymphocytes (8%). Significant differences between males and females were observed in the total number of heterophils (42 and 35% respectively, P less than 0.002), heterophil myelocytes (12 and 10%, P less than 0.01) and the myeloid:erythroid ratio (1.9:1 and 1.4:1, P less than 0.03). Heterophils presented both...

Regulation of sodium intake in the mongolian gerbil

In the present study, two experiments were conducted to examine how the gerbil (Meriones Unguiculatus) responds to a chronic sodium deficiency. Adult male gerbils with a mean body weight of 79.81 grams, were maintained for a baseline period on a normal Purina Rat Chow and then they were placed on a salt-free diet. In addition they had ad lib access to a salt solution and water in a two bottle t...

Effect of aminophylline on cerebral infarction in the Mongolian gerbil.

The effects of aminophylline in Mongolian gerbils subjected to unilateral carotid ligation were studied. The drug was given in varying intraperitoneal doses at varying postoperative intervals and the animals observed for 5 days for clinical signs of stroke. Doses of 100 mg per kg caused early death and were discontinued. Doses of 50 mg per kg had no significant effect on morbidity, mortality, t...

The somatic chromosomes of the Mongolian gerbil (Meriones unguiculatus).