Describe the ecosystem the we live in including communities populations individuals biotic and abiotic factors

Vaccines are weakened forms of disease causing microorganisms, which are given to patients to prevent disease. after the vaccine is administered, the immune system responds by creating a(n) to recognize the a.) antibody, antibiotic b.) antigen, antibody c.)antibiotic, antibody d.)antibody, antigen

What are antigens and antibodies? how are they involved in the body’s response to incompatible blood?

Por qué crees que los huevos con cáscara se llaman amnióticos?