★ Bacteria & Viruses Quiz
Which of the following can challenge the immune system?
A. Allergies
B. Antibodies
C. Vaccines
D. Macrophage
Select your answer:

Topics:
Bacteria & Viruses Immune System Human Body and Pathogens Health issue related to immune system The Human Eye Digestion Psychiatry Hematology Acute Leukemias Joints in our Body Pathology Blood Cells EM Spectrum Respiration Disease & Immunity Source of FoodOther quiz:
Biochemistry › ViewWhich of these is an element?
A. Water
B. Carbon dioxide
C. Oxygen
D. Salt
The Musculoskeletal System › View
Tendons are strong tissues that link muscles with bones the same with how ligaments link a bone with another.
A. TRUE
B. FALSE