Episode 57 continues with the immune system, specifically the 2nd Line of Defense. That includes leukocytes, antimicrobial proteins, inflammation, and fever. Don't forget to check out my Instagram account and Youtube channel for resources that can help you get your B or better in A&P. And tell your instructor about A&P Digital Suite by McGraw-Hill, my tutor video-based textbook alternative being used at several colleges and universities throughout the United States.