Abstract:
:The disease provoked by injections of water and other harmless liquids or wounds without tissue loss, is characterized by the regression of certain organs, opening in the epidermis, pigmentary anomalies and malignant tumors. The very few worms which recover spontaneously, regenerate the eliminated parts or develop supernumerary structures. Wound are producing the disease less frequently when planarians are undernourished. The disease can also manifest itself spontaneously, especially in the summer. Diseased worms become unable to regenerate. During a transitory period epimorphosis is still possible but is not followed by morphallaxis. The symptoms of the disease manifest themselves in the regenerated parts. A fragment cut out from a worm that just became diseased regenerates and recovers completely. The results give additional evidence to the earlier conclusions about the "type I cell" system of planarians. The disease is provoked by an excessive activity of this system with respect to the animal's actual need and is analogous both to cancer and the consequences of X-ray treatment.
journal_name
Oncologyjournal_title
Oncologyauthors
Chandebois Rdoi
10.1159/000225055subject
Has Abstractpub_date
1975-01-01 00:00:00pages
86-100issue
2eissn
0030-2414issn
1423-0232journal_volume
32pub_type
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