Adam Barrett describes his seven-drug antiretroviral regimen and the importance of adherence.
A touch to the Aplysia's siphon causes a gill withdrawal, a simple reflex for studying memory.
Dr. Brett Finlay shows how bacteria can grow rapidly to incredible numbers, and also explains what limits this explosive growth.
Adam Barrett, a nurse who is HIV positive, discusses his first symptoms and the challenges of adhering to a drug regimen.
The fight against dengue fever, and the mosquitoes that carry the virus, is being carried out by "brigadistas" in Managua's neighborhoods. Spanish with English subtitles.
Video closeup of the C. elegans sperm that moves like an amoeba.
A patient can both comprehend and articulate language, but cannot verbalize what is a clear idea in her mind.
Dr. Rosenthal describes how antlers are one of the few examples of complete mammalian regeneration.
A Taser hyperexcites the nervous system to cause a rigid immobilization of its target.
Clive Wearing has lost his ability to remember and lives in a perpetual state of having just awoken.
Charles Runckel, a graduate student in the DeRisi lab, uses the Virochip to examine the mystery of bee colony collapse disorder.
Genetically engineered mice lacking proprioceptive sensory axons are not capable of well-coordinated walking.
Zinhle Thabethe describes how antiretroviral therapy has changed her life.
The bobtail squid swims during the night to hunt. During the day, it burrows to hide from predators.
Corn was originally bred from the teosinte plant by native Mexican farmers. The morphologies of modern-day corn and teosinte plants are compared to illustrate how artificial selection can bring about dramatic changes in plants.
Video microscopy of mating between a male and a hermaphrodite C. elegans roundworm.
In this video Dr. Charles Sawyers provides an overview of the types of genes that, when mutated, can lead to the development of cancer.
Even when distracted by food, the cat's brain encodes and retains the location of an obstacle.
Dr. Brett Finlay enlists a student volunteer to show the surprisingly high amount of bacteria found in his own mouth.
A new technique for making the brain transparent provides extremely detailed views of groups of neurons.
Prehistoric stone tools are classified into six broad technological modes by the level of sophistication and method of fabrication.
Even though Clive Wearing cannot remember people or events, his piano-playing skills are intact.
What does a stack of fruits and vegetables have to do with the theoretical advantages of sexual reproduction? Find out in this demonstration with student audience members and Dr. David Page.
Chimpanzees are capable of using rocks as tools to crack nuts for eating. But they don't appear to use sharp-edged tools.
Dr. Jessell's leg muscle activation patterns are recorded during walking.