thalidomide was administered on the 12th day of pregnancy by the intraperitoneal route in a mixture of tween 20 with saline ( 1:3 ) in doses of 25 , 50 and 200 mg/kg to females with genetic background lew that were purposely mated with males of the bn or bn.lx strains .
C0039736
thalidomide
C0032961
pregnancy