The presence or absence of two antigens.
A. Size, because it would determine if the molecule can fit though the pores.
Answer:
They are about 1/10th the size of a typical human cell. Microbes are generally measured in the scale of one millionth of a meter, which is known as a micrometer.
Explanation:
The brain injury suffered by Phineas allowed psychologists to learn about the functions of the brain's FRONTAL LOBE.
The man case was the first one in which a brain damage will result into a change in personality. The damage to the Phineas frontal lobe helped scientists to recognize the connection between the frontal lobe of the brain and social cognition and decision making.<span />
