A sample is put on a Virochip microarray, and results are compared to databases of all known viral sequences.
Delivering a single virus to a cell allows the virus to infect the cell, replicate, and give rise to many progeny viruses. These viruses can then infect many neighboring cells.
The geometric structures of viruses are beautiful and can be used, along with genomic information, to identify them.
A visual representation of the U.S. AIDS epidemic from 1981 to 1997. Each dot represents 30 cases.
In this animation, you can see how one S. typhimurium invades an epithelial cell of the intestinal tract, survives the intracellular defense mechanisms of the host cell, and multiplies.
Bacteria can transfer genetic material, and thus drug resistance, to other bacteria via conjugation.
Dengue virus has sophisticated mechanisms for entering a cell, for replicating its RNA genome, and for translating proteins.
Since the 1960s dengue fever has spread to many countries and total case numbers have exploded.
The dengue virus's outer envelope proteins form symmetrical units and overlay the lipid envelope, capsid, and the RNA genome.
Watch this animation to see the molecular tricks that an infectious strain of Escherichia coli uses to infect your gut.
When a malaria-carrying mosquito bites a human host, the malaria parasite enters the bloodstream, multiplies in the liver cells, and is then released back into the bloodstream, where it infects and destroys red blood cells.
A mosquito becomes infected with malaria when it sucks the blood from an infected human. Once inside the mosquito, the parasites reproduce in the gut and accumulate in the salivary glands, ready to infect another human host with the next bite.
Adam Barrett describes his seven-drug antiretroviral regimen and the importance of adherence.
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.
Zinhle Thabethe describes how antiretroviral therapy has changed her life.
An interview with Silvia Caballero, an undergraduate who discusses what it's like to be in a lab doing scientific research.
Using tic tac mints as anti-HIV drug stand-ins, students experience the challenges of adhering to an antiretroviral regimen.
Several members of a Nicaraguan research team describe the impact of technology transfer.
An interview with Dr. DeRisi.
Catherine Gaynes, an HIV-positive patients, discusses her HIV diagnosis, how her family reacted, and avoiding HIV infection.
Dr. Michael Gottlieb was the first physician to notice the new disease of AIDS.
Dr. Beatrice Hahn's research has traced the origin of HIV to chimpanzees in Cameroon.
In the effort to eradicate dengue and mosquitoes, neighborhood leaders work with local conditions.
Dr. Beatrice Hahn discusses how HIV originated in Africa by cross-species transmission from chimpanzees to humans.