1. An Invitation to Health, 10e Chapter 11

2. Fig. 11.1: The human lymphatic system and its functions ©2003 Wadsworth, a division of Thomson Learning, Inc. Thomson Learning ™ is a trademark used herein under license.

3. Fig. 11.2: Recommended childhood immunization schedule ©2003 Wadsworth, a division of Thomson Learning, Inc. Thomson Learning ™ is a trademark used herein under license.

4. Fig. 11.4: How tuberculosis spreads ©2003 Wadsworth, a division of Thomson Learning, Inc. Thomson Learning ™ is a trademark used herein under license

5. Fig. 11.6: How HIV infection and other STDs are spread ©2003 Wadsworth, a division of Thomson Learning, Inc. Thomson Learning ™ is a trademark used herein under license.