The Biology Project is an interactive online resource for learning biology, developed at The University of Arizona. It has been designed for biology students at the college and high school level, but is useful for medical students, physicians, science writers, and all types of interested people. 

The HIV AIDS Tutorial is split into six parts; HIV impacts, Immune response overview,
Immune response to HIV ,Treatment ,questions to test yourself and External links for HIV/AIDS information.

The tutorial is written in a simple language and rich with colorful and easy to understand illustrations. The basics of immune response and response immune system to HIV infection are explained in easy to understand manner. Commonly used anti-retroviral drugs and their mode of action is also briefly explained. The learner is provided with a HIV and AIDS problem set to help him test is recently acquired knowledge. A tutorial is also provided with each problem to assist the learner in solving them. Links to other related learning resources are also provided.