Description: Using phase microscopy, macrophages are shown moving towards and engulfing the yeast. The enrichment of fluorescently labeled actin in the psuedopods that surround the yeast are shown in the second movie. In the third movie, fluorescence is used to follow phagocytosed yeast as they are delivered to lysosomes.
Length: 2:11 min Type: Short Clips Topic: Human health
Description: Dr. Mellman explains that the immune system is made up of specialized cells that protect us from the huge number of pathogens we continually encounter. The immune system has two “arms”; innate immunity which detects components shared by all pathogens and adaptive immunity which detects components specific to individual pathogens. Mellman explains how these two “arms” work and the important role of dendritic cells in linking the two “arms” together.
Length: 35:32 min Type: iBioEducation Topic: Human health