Expand your knowledge base with the help of IDNLearn.com's extensive answer archive. Discover the information you need quickly and easily with our reliable and thorough Q&A platform.
Answer:
white blood cells that systematically envelop and kill pathogens such as bacteria, viruses, and fungi, worn-out body cells, and cells that have become cancerous. their surface fragments, called antigens, literally antibody generators.
Explanation: