Principles used to select drugs for inclusion in combination chemotherapy regimens: 1  Drugs known to be active as single agents should be selected for combinations.  Drugs with different mechanisms of action should be combined in order to allow for additive or synergistic effects on the tumor.
Zebra duikers have gold or red-brown coats with 12-16 distinctive zebra-like stripes, dark markings on their upper legs, and russet faces. Newborns appear darker because they are born with their stripes closer together. An adult can grow to 90 cm (35 in) in length, 45 cm in height, and 20 kg (44 lb) in weight. Their horns are short and round with sharp pointed tips. They are about 4.5 - 5.0 cm long in males, and half that in females. Female body size is larger than males, possibly due to long gestation periods.
Plains zebras are 3.6 to 4.8 feet (1.1 to 1.5 m) at the shoulder and weigh up to 770 lbs. (350 kg), according to the African Wildlife Foundation. Habitat. Though they all live in Africa, each species of zebra has its own home area. Plains zebras live in the treeless grasslands and woodlands of eastern and southern Africa. The Grevy's zebra lives in in the arid grasslands of Ethiopia and northern Kenya. The mountain zebra is found in South Africa, Namibia and Angola.