“…The method of preparation of the thin subcutaneous tissue spread and the staining of the preparations have been described elsewhere (Murgatroyd and Goswami, 1962 (Halberg et al, 1953 ;Speirs, 1956 ;Halberg et al, 1957 The initial neutrophil leucocyte response to the inoculation of various native or foreign normal or tumour cell suspensions was a constant feature. It has been suggested (Essellier et al, 1955) (Furth & Kabat, 1940, 1941Triplett, 1962) Each of these consists of several components. It has also been shown that like normal cells, malignant cells contain all or almost all the normal species antigen (Moller, 1962) and also isoantigen (Klein, 1959) except in the case of very freely transplantable tumours (Amos, 1955).…”