phytohemagglutinin

initialism: PHA
https://doi.org/10.1351/goldbook.13572
Plant lectin that acts as a T-cell mitogen.
Source:
PAC, 2012, 84, 1113. (IUPAC glossary of terms used in immunotoxicology (IUPAC Recommendations 2012)) on page 1229 [Terms] [Paper]