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.
Another theory suggests that zebra stripes are actually very effective in hiding the animal in long grass because lions are in fact colorblind! But baby zebras can run and stay near their mother and the other adult zebras. It looks like a kind of horse or zebra, but itâs not related to either of them. Lions love to eat baby zebras. So, a zebraâs stripes help it to survive. This makes it difficult for predators, such as lions, to identify one zebra to attack. Zebras have black and white stripes.