Free Science Videos and Lectures

HIV replication is a complex multi-staged process that includes crucial steps taking place on the exterior as well as the interior of the target host cell.

The first three steps involved in cell...

This science video contains:
cell, replication, nrti, nnrti, virodna, protease inhibitor, hiv, host, attachment, binding, fusion

Human neutrophils are mobile cells that will quickly migrate to sites of injury to help fight infection. They are attracted there by chemical signals released by other cells of the immune system or...

This science video contains:
experiment, human, polarization, cell, bacteria, blood, neutrohpil chemataxis, microbes, chemical signal, micropipette

Neutrophils are our body's first line of defense against bacterial infections.

These cells can recognize certain chemicals and move to the source of these "chemoattractants" by migrating up the...

This science video contains:
cell, neutrophil chemotaxis, bacteria, bacterium, defense