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.
The zebra is the horse of the savanna. Grant's zebra is the most abundant of the 3 species of zebra. The zebra looks like a horse, only smaller. It doesn't sound like a horse, and barks instead of neighs. Its height is about 50 in. from shoulder to hoof, and weighs in at 500 to 600 pounds. It has rather short legs and a large head.