This animation introduces what antibodies are, where they come from, and how they can be used in the laboratory.

This video narrates the curios case of the Berlin patient who was the first person considered cured of HIV.

Biology 2e is designed to cover the scope and sequence requirements of a typical two-semester biology course for science majors. The text provides comprehensive coverage of foundational research and core biology concepts through an evolutionary lens. Biology includes rich features that engage students in scientific inquiry, highlight careers in the biological sciences, and offer everyday applications. The book also includes various types of practice and homework questions that help students understand—and apply—key concepts. The 2nd edition has been revised to incorporate clearer, more current, and more dynamic explanations, while maintaining the same organization as the first edition. Art and illustrations have been substantially improved, and the textbook features additional assessments and related resources.

By the end of this section, you will be able to do the following:

Describe physical and chemical immune barriers
Explain immediate and induced innate immune responses
Discuss natural killer cells
Describe major histocompatibility class I molecules
Summarize how the proteins in a complement system function to destroy extracellular pathogens

This scrollable introduces the sequence of the human chemokine co-receptor 5
gene. Three DNA regions are chosen as the most promising guide RNA targets
for CRISPR-Cas9 editing.

This video introduces how HIV enters the host cell, how it co-opts the cellular machinery to reproduce, and how to fight HIV infection.

This video explains how HIV enters the host cell, how it co-opts the cellular machinery to reproduce, and how to fight HIV infection.

This video describes the non-adaptive immune system, innate immune system, and the adaptive immune system.

This interactive introduces how HIV enters the host cell and uses its resources to
reproduce.

A GFP reporter gene is used to test CRISPR-Cas9 edited macrophages for HIV resistance.