| Topic | Resource |
| Non-Specific Host Defenses and Host Systems | Stephen Abedon Ohio State University |
| Sebaceous Glands and Sebum | Wikipedia |
| Lysozyme | Wikipedia |
| Lysozyme Action | Lysozyme.co.uk |
| Neutrophils – no references | Wikipedia |
| Macrophages | Wikipedia |
| HIV and Macrophages | Fedde Groot |
| HIV and Dendritic Cells | Fedde Groot |
| Dendritic Cells | Wikipedia |
| Natural Killer Cells | Wikipedia |
| Natural Body Guards; How your Killer Cells Get Motivated | LiveScience.com |
| Index of Topics of Inflammation | Pathophysiology Principles of Disease Slovak Academy of Science |
| Mast Cells and Basophils | Pathophysiology Principles of Disease Slovak Academy of Science |
| Mast Cells Counter Snake Venom | LiveScience.com |
| Fever | Pathophysiology Principles of Disease Slovak Academy of Science |
| Eosinophils | Wikipedia |
| Phagocytosis Animation | HowStuffWorks.com |
| Phagocytosis and Pathogens | University of Connecticut |
| Phagocytosis Animation | McGraw-Hill Higer Education |
| Cytokines | Wikipedia |
| Cytokine Tuturial | Microvet University of Arizona |
| Colony Stimulating Factor | Cells Online Pathfinder Encyclopedia |
| Interferons | Cells Online Pathfinder Encyclopedia |
| Tumor Necrosis Factor Alpha | Wikipedia |
| Directory of Interleukines | Wikipedia |
| The Complement System | Kimball’s Biology Pages |
| Overview of the Complement System | Wikipedia |
| Animation of Complement Activation | Kimball’s Biology Pages |