[Do monocytic agglutinins exist?]

Twelve monocytotoxic sera were examined with 15 samples of monocytes, using the micromonocytotoxic and micromonoagglutination test. Weak agglutinins [+/-, +] were detected concurrently with cytotoxins only in 3 of 180 examinations at 37 degrees C. Monocytotoxins were found in 23.33% of reactions. From the results ensues that the existence of monocytic agglutinins is dubious.