Terms Related to Catecholestrogens

• PGB

  Physiologically active prostaglandins found in many tissues and organs. They are potent pressor substances and have many other physiological activities.

• Zymogens

  Physiologically inactive substances that can be converted to active enzymes.

• Immunological and Biological Factors

  A collective grouping for biologically active substances that play a role in the functioning of the immune system and those that show biological or physiological …