guinea pigs injected with 100 micrograms of p-azobenzenearsonate derivatives of hexa-l-tyrosine , tri-l-tyrosine , or n-acetyl-l-tyrosine amide , in complete freund 's adjuvant , developed , after 10 to 19 days , delayed-type hypersensitivity to these substances .
C0041485
tyrosine
C0067794
n-acetyl-l-tyrosine