A effector T cell that provides help in the form of secreted cytokines to other immune cells. [ GOC:pam http://www.ncbi.nlm.nih.gov/pubmed/18395547 GOC:tfm GOC:add http://purl.obolibrary.org/obo/go/references/0000031 ]
Synonyms: helper T lymphocyte helper T-cell T-helper cell helper T-lymphocyte