86 THE ENZYME
TREATMENT OF CANCER
pletely
differentiated sterile Metazoan or higher animal organism, which, starting by
the abnormal development of a vagrant primary germ-cell, and growing under
conditions unfavourable to the complete and normal differentiation of all its
parts, unfolds and develops those things, for whose growth the nidus is
suitable, the rest degenerating. And, exactly as identical twins are the
offspring of two sister or brother germ-cells, identical in ancestry from the
same primitive germ-cell, and identical in all ultimate characters, so also
any higher animal, and a tumour within it, stand in the same relations of
ancestry from one primitive germ-cell, have the like ultimate characters
(identity) at the starting-point of their development; but, unlike
fully-developed identical twins, the individual and its tumour develop in
different directions: the one upwards along the track of higher and higher
organization, the other downwards, along the roadway of abnormality, of
degeneration, of arrest, even at times—when the asexual generation is
represented— of riot, destruction, and disaster.
The
highest tumours, then, are (1) the cystic embryomata. On these follow
(2) the solid embryoid or teratoid tumours of the ovary, containing skin, gut,
and “mesoderm,” and derivatives of these. (3) The less highly developed ones of
the testis. Like the foregoing, these are “three-layered,” the skin is scanty,
they contain gut and trachea, the heal-region is rudimentary, and their growth
is unlimited. Borst has recorded in them ganglion cells and sympathetic
ganglia. (4) Teratoid tumours, where the “embryonic” tissue is mainly sarcomatous
(cancer or asexual generation). (5) Teratoid tumours of the testis with
the epidermal layer lacking. (two-layered tumours of Wilms). These teratoids
lead to (6) the more complicated sacral and parotid tumours, and