Immune System by Michael Shi

Cells of the Immune System

1ce — 2014-03-25 18:58:49 UTC

Stage 1-Macrophage

1ce — 2014-04-01 18:40:21 UTC

A macrophage comes and lets the cell infect it. The macrophage will have a part of the bacteria at the surface.

Stage 2-Identification

1ce — 2014-04-01 18:43:00 UTC

The macro-phage or "phagocyte" in diagram now has bacteria on surface. The Helper T cell comes and identifies the bacteria to see if they have attacked before.

Stage 3-Main Phase

1ce — 2014-04-01 18:53:48 UTC

Now the helper T cell calls for backup with certain chemicals and B cells finds the correct bacteria. Then when activated by the Helper T cell it splits into plasma cells and memory cells. The plasma cell releases antibodies that tag the identified bacteria. Then the killer cells "eat" the tagged viruses.

Stage 4-Memory

1ce — 2014-04-07 16:58:29 UTC

Finally a Memory B cells remember the bacteria and if the same bacteria strikes again it will warn the other cells once again