after overnight incubation at 37 degrees c , the average percentage of iga binding lymphocytes detected in major iga-producing organs ( peyer 's patches , 14.4 % ; appendix , 8.4 % ; and mesenteric lymph nodes , 11.3 % ) , was generally higher than that detected in systemic lymphoid tissue .
C0024264
lymphocytes
C0024296
lymphoid tissue