forensic

Whole blood carries cell and plasma

the fluid with hormones clotting factors, and nutrients

red blood cells (erythrocytes)

Carry oxygen to the body's cells and carbon dioxide away

white blood cells (leukocytes)

fight disease and foreign invaders and, alone contain cell nuclei

Platelets (thrombocytes)

aid in blood clotting and the repair of damaged blood vessels

class evidence

blood

Type A

42%

Type B

12%

Type AB

3%

Type O

43%

Antigens

foreign molecules or cells that react to antibodies

Analysis of a spatter pattern can aid in determining the

-direction blood traveled
-angle of impact
-point of origin of the blood
-velocity of the blood
-manner of death