TY  - RPRT
TI  - Mucosal immunity.
AU  - J Bourne
AU  - T Newby
PY  - 1981
DO  - 10.1136/inpract.3.5.5
UR  - https://pubmed.ncbi.nlm.nih.gov/7049960/
ID  - 7049960
ER  -