In this dramatic movie from the 1950’s a neutrophil chases and engulfs a bacteria. White blood cells like this neutrophil are an important part of our immune system. They will migrate to a site of infection or inflammation through chemotaxis and eliminate invading microbes. This phenomenon will hopefully lead to a number of student questions like: How does the white blood cell follow the bacteria? What happens once the microbe is engulfed?
Feeding the Sea: Phytoplankton Fuel Ocean Life
This video explores the diversity of phytoplankton in the oceans and shows why these plant-like organisms play such a crucial role in life.