Production of heteroagglutinins in haemocytes of Leucophaea maderae L.

It was our purpose to study the immunological activity of circulating fluid cells in the blattoid insect Leucophaea maderae L. These cells are generically called haemocytes; after a preliminary morphological study under optical microscope, they were treated with anti-heteroagglutinins serum marked with fluorescein isothiocyanate. Thus, it was possible to show the presence of heteroagglutinins into the cytoplasm, as regards one group of haemocytes, and on the cell membrane for the second group.