antibodies are produced by what defense substances
The third line of defense, the immune system, responds in a specific way to particular toxins, microorganisms, aberrant body cells, and other substances marked by foreign molecules. Specific defensive proteins called antibodies are produced by lymphocytes. 2) Non-specific defense.Microbes that penetrate the first line of defense face the second line of defense, which depends mainly on phagocytosis, the ingestion of invading organisms by certain types of white cells.pecific defensive proteins called antibodies are produced by lymphocytes. 2) Non-specific defense. Microbes that penetrate the first line of defense face the second line of defense, which depends mainly on phagocytosis, the ingestion of invading organisms by certain types of white cells.