DineshDabhadkar1

immune system immunity t cell nervous system nerve junction signal neurotransmitters nerve cell neuron bird morphology features charcters birds foreign particle immunology antigen adrenal gland protozoa characters invetebrates protozoa vertebrates aortic arches characters coelentrates tubifora obelia medusa sponges scypha sycon mosquito anaphelus vivax life cycle of plasmodium education and training