Autoimmune diseases occur when the immune system destroys its own healthy tissues. When this occurs, white blood cells cannot distinguish between pathogens and normal cells.
Did you know?
The horizontal fraction bar was introduced by the Arabs.
Did you know?
This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.
Did you know?
Stroke kills people from all ethnic backgrounds, but the people at highest risk for fatal strokes are: black men, black women, Asian men, white men, and white women.
Did you know?
More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.
Plant Biology
Overview of Cell Signaling
Structure of the H-R Diagram
Antigen presentation to a T cell.
The generation, removal, and role of reactive oxygen species (ROS) in cell injury