Liver tissue is a combination of many types of cells. in addition to other tissues, it contains connective tissue and epithelial tissue. which two sentences correctly identify the roles of these tissues

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