Managing Feeder Calf Health
Kristina Ivanchenko Bio240
How Do Antibiotics Work
The Immune System. II. How diseases are spread 1.Physical contact 2. Contaminated food and water 3. Infected animals (vectors) III Fighting Infectious.
Chapter 40-2 Immune System. A series of defenses that guard your body against disease Function: to fight infection by producing cells that inactivate.
The Immune System
