Neutrophils and eosinophils
In this compound light micrograph, purple-stained neutrophil (upper left) and eosinophil (lower right) are white blood cells that float among red blood cells in this blood smear. Neutrophils provide an early, rapid, and nonspecific defense against invading pathogens. Eosinophils play a variety of roles in the immune response.
Source
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"OpenStax College, Introduction. October 17, 2013."
http://cnx.org/content/m44817/latest/Figure_42_00_01.jpg
OpenStax CNX
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