If microorganisms penetrate the first line of defense,a second line of _______________ forms defense mechanisms that become operational.

Question

Quizplus · Accepted Answer

If a microorganism penetrates the skin or mucosal membranes,a second line of cellular and humoral defense mechanisms becomes operational.Secretions are an important component in the first line of defense against microbial invasion.

If Microorganisms Penetrate the First Line of Defense,a Second Line