natural immunity –>
innate immunity
This includes local barriers to infection such as skin, stomach acid, mucous, the cough reflex, enzymes in tears and saliva and skin oils.
Immunity to disease that occurs as part of an individual’s natural biologic makeup.Immunity brought about by the possession of suitable antibodies to fight the infection, which may have remained from a past infection or passed on from the mother.
Upon fertilization, a zygote forms and develops into an embryo. This tutorial elaborates on the growth and development f..
Plants are characterized by having alternation of generations in their life cycles. This tutorial is a review of plant m..
Autotrophs flourished, absorbing carbon and light. Soon after, primitive life forms that could assimilate oxygen thrived..
Following nine months inside the mother's womb is the birth of the baby. Know the different stages of the birthing proce..
Planktons are microscopic organisms that live suspended in aquatic habitats. There are two groups: the phytoplanktons an..
This tutorial describes the sigmoid curve, annual plant growth, tree growth, human growth, and insect growth as the grow..
