blood basics
This liquid portion makes up the majority of human blood...
what is plasma?
These stains, such as drips or pools, are created by the force of gravity alone.
What are passive bloodstains?
These are the four main ABO blood groups.
What are A, B, AB, and O?
These specific cells are responsible for carrying oxygen throughout the body.
What are red blood cells?
A bloody handprint or footprint left on a wall is classified as this type of stain.
What is a transfer bloodstain?
`Unlike blood typing, this evidence is unique to every individual except identical twins.
What is DNA?
This component of blood is responsible for helping the blood clot.
What are platelets?
This category includes patterns caused by force, such as stabbings or gunshots.
What are projected bloodstains?
To find DNA in a blood sample, investigators must look specifically at these cells.
What are white blood cells?
These cells are the "warriors" of the blood that fight off infection.
What are white blood cells?
This specific pattern occurs when blood is flung off a moving bloody object, like a baseball bat.
What is a cast-off pattern?
This "factor" determines if a person's blood type is positive or negative.
What is the Rh factor
This protein found in red blood cells gives blood its distinct red color.
What is hemoglobin?
This type of projected pattern is created when a main artery is breached and blood escapes under pressure.
What is arterial spray?
Blood typing is used for this purpose—to either include or "kick out" a suspect from a list.
What is to include or exclude?