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.
Zebras are single-hoofed animals that are native to Africa. Zebras are very closely related to horses and donkeys; in fact, they are in the same genus, Equus. The most prominent feature of zebras is the bold patterns on their coats.he largest zebra is the Grevy's zebra, according to the San Diego Zoo. It weighs 770 to 990 lbs. (350 to 450 kilograms) and is around 5 feet (1.5 meters) tall from shoulder to hoof. Their thick bodies make them look like mules with stripes.