TY  - RPRT
TI  - Mucosal immunity and vaccination.
AU  - J Holmgren
PY  - 1991
DO  - 10.1111/j.1574-6968.1991.tb04964.x
UR  - https://pubmed.ncbi.nlm.nih.gov/1815705/
ID  - 1815705
ER  -