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.
Physical Description. Head and body length= 925-1,050 mm; tail= 700-750 mm; Hind foot= 220-230 mm; ear length= 76-78 mm. Males are notably larger than females. Red-necked wallabies are named for the reddish fur on their napes and shoulders. The rest of the body is fawny gray with a white chest and belly.The tail is gray above and white below. Hands and feet are gray, becoming black at the ends of the digits. The muzzle is dark brown, and the ears of red-necked wallabies are longer in proportion to other macropods.s in other macropods, red-necked wallabies use their tails as a prop. They are mainly crepuscular, spending daylight hours resting in cover, although they are often seen foraging until late in the morning and beginning evening foraging late in the afternoon.