The trophoblast theory of cancer (John Beard, 1857-1924) revisited.

Abstract:

:Beard's theory can be restated in a modified form in modern terms in the following way. Cancer represents primarily trophoblastic tissue derived either from an aberrant germ cell or from a somatic cell whose normally repressed 'asexual generation' genes are abnormally reactivated ('derepressed'). The variety of tumors, other than teratomas, may be due to a parallel chance derepression of some genes of somatic ('sexual gneration') characters. This would be a defensive reaction against intramural parasitization by trophoblast and would result in the differentiation and hyperplasia of normally present more primative somatic cells.

journal_name

Oncology

journal_title

Oncology

authors

Gurchot C

doi

10.1159/000225037

subject

Has Abstract

pub_date

1975-01-01 00:00:00

pages

310-33

issue

5-6

eissn

0030-2414

issn

1423-0232

journal_volume

31

pub_type

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