OpenStax
Open Stax: Anatomy & Physiology: Leukocytes and Platelets
This study of white blood cells includes informational reading material, illustrated diagrams, vocabulary, and self-checking review and application questions.
US National Library of Medicine
Medline Plus: Wbc Count
An overview of a white blood cell test. How the test is performed, how to prepare for the test, risks involved, and the results of the tests are discussed.
Other
Dr. Hull: Parents' Common Sense Encyclopedia: Cbc, Complete Blood Count
Chart giving the normal ranges in a complete blood count or CBC. Looks at white blood cells, hemoglobin, hematocrit, red blood cells, platelets, and average red cell size. Click on highlighted terms for more information about them.
Other
Health on the Net Foundation: Eosinophil
A definition of eosinophil, one of the five different types of white blood cell characterized by large red (i.e. eosinophilic) cytoplasmic granules.
Other
New York State Dept. Of Health: Cellular Hematology
Description of hematology and normal leukocyte counts.