43. Immune System - 2. B-cell lymphocytes (release...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
Immune System I. Innate Immunity A. Characteristics of innate immunity 1. Primary defense 4. Found in plants, invertebrates and vertebrates B. External Defenses 1. Skin 2. Secretions 3. Ciliated epithelia 4. Mucous C. Internal Defenses 1. Phagocytosis 2. Inflammation 3. Antimicrobial peptides 4. Natural killer cells (kills by apoptosis) II. Adaptive (Acquired) Immunity A. Characteristics of innate immunity 1. Secondary defense 4. Found in jawed vertebrates B. Major components 1. T-cell lymphocytes (2 types)
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 2. B-cell lymphocytes (release antibodies) C. Antibodies (i.e. immunoglobulins) 1. Found on B and T-cells 2. Recognize foreign objects 3. Millions of receptor types 4. B-cells secrete free roaming antibodies when activated D. Clonal selection & immunological memory E. Helper T-cells 1. Binds to infected cell (via MHC II) 2. Releases cytokines (call for help) 3. Disengages and searches for new target F. Cytotoxic T-cells 1. Binds to infected cell (via MHC I) 2. Induces apoptosis 3. Disengages and searchers for new target...
View Full Document

This note was uploaded on 04/19/2008 for the course BSC 2011 taught by Professor Fedorka during the Spring '08 term at University of Central Florida.

Ask a homework question - tutors are online