peripheral blood leukocyte

initialism: PBL
https://doi.org/10.1351/goldbook.13552
Leukocyte derived from the peripheral circulatory system.
Source:
PAC, 2012, 84, 1113. (IUPAC glossary of terms used in immunotoxicology (IUPAC Recommendations 2012)) on page 1226 [Terms] [Paper]