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.
No zebra, or other wild equid, has a forelock. - The Grevyâs zebra is the largest, weighing from 770 to 990 pounds (350 to 450 kilograms) and measuring up to 5 feet (1.5 meters) at the shoulder.Its thick neck and large, round ears give the Grevyâs zebra the most mule-like physique.ead between the lines, and youâll discover that the world of the zebra is colorful indeed! Zebras are equids, members of the horse family. They have excellent hearing and eyesight and can run at speeds of up to 35 miles per hour (56 kilometers per hour).