These genetic variants are believed to cause changes in the way the bodyâs T cells behave. T cells are immune system cells that normally fight off harmful invaders, such as viruses and bacteria. In people with psoriasis, however, T cells also attack healthy skin cells by mistake. This immune system response results in a range of reactions, including: 1  enlargement of blood vessels in the skin.  increase in white blood cells that stimulate the skin to produce new cells more quickly than usual.
Teeth. Zebra have several types of teeth that help them survive in their habitats. In the front of their mouths, zebra use their strong incisors for biting off grass and other vegetation. In the rear of their mouths, zebra have molars and premolars to grind down their food.
In order for the snow leopard to survive i the alpine tundra it needs a well developed chest to help them climb steep slopes. They also need short forelimbs with large paws fo â¦ r walking on the snow and long hind-limbs for leaping. Both give the snow leopard agility on there steep and rugged enviorment. When a snow leopard leaps it can leap from 30 to 36 times its body length. Wen living on the mountain they would need a long and flexible tail to keep them balanced when they chase their prey.