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.
1 Three species of zebras live in Africa. 2  The species are the Plains Zebra, which is the most common one, the Mountain Zebra, and the Grevy Zebra. 3  Zebras are a short, stocky animal that is generally about 8 feet long and stands between 4 and 5 feet at the shoulder. The species are the Plains Zebra, which is the most common one, the Mountain Zebra, and the Grevy Zebra. 2  Zebras are a short, stocky animal that is generally about 8 feet long and stands between 4 and 5 feet at the shoulder. 3  They can weigh up to 650 pounds.