&quot;Natural&quot; and &quot;immune&quot; heteroagglutinins in Bufo arenarum Hensel: their fractionation by means of human and pig red cells (author's transl)
Heteroaglutininas &quot;naturales&quot; e &quot;inmunes&quot; en Bufo arenarum Hensel: su fraccionamiento con hematíes humanos y de cerdo