swiss webster ( crl : cfw ( sw ) br ) and b6c3f1 ( : crlbr ) male mice from charles river breeding lab . in massachusetts , usa , were fasted overnight and given 0 , 5 , 10 , 20 , or 40 mg hydrazine per kg body weight by intraperitoneal injection and decapitated 24 hr later .
C0024874
massachusetts
C0041703
usa