Immunodeficiency disorders can be due to defects in T cells, B cells, phagocytes, complement or combined. They cause recurrent pyogenic, viral and fungal infections. Some of them predispose to autoimmune disorders and cancers.
Antibiotics may be bacteriostatic or bactericidal. They can be classified according to their mechanism of action. This video describes the mechanism of action of currently used antibiotics.
A straightforward, easy to read guide that explains what a good USMLE score is and breaks it down by program.
