On the Structure and Development of the Cysticercus cellulosae, as Found in the Pig, by George Rainey

tuting a distinct being and is named a <u>proglottis p<\u>. The evidence of the conversion of cystic into cestoid ento= zoa is simple. A particular form of Cysticercus grows into a particular species of taenia of which it is the <u>scolex<\u>; at least this definite specific relation is probable; and it has now been shown, by numerous and varied experiments, that when cysticerci are given to an ani= mal with its food, they gradually pass into taeniae; provided the Cysticercus made use of is the true scolex of the species of taenia harboured by the animal subjected to experiment. The taeniae thus produced agree in number with the cysticerci swallowed, at least never exceed them; they may be traced in progress of development, and when given successively at suitable intervals, the resulting taeniae present corresponding differences of advancement. The <u>Cysticercus cellulosae<\u> is believed to be the scolex of the <u>Taenia solium<\u> which infests the human ali- mentary canal; and in an experiment made on a criminal condemned to execution, these cystic parasites put into the food shortly before death were afterwards found in the intestine converted into taeniae, suffi= ciently advanced to be recognized as the <u>Taenia solium<\u>. The taeniae being thus developed from the Cysticercus, it should naturally follow that the Cysticercus is, in its turn, derived from the taenia; and the fact is esta= blished by experiments which may be regarded as com= plementary of the former. Mature segments of the tape-worm, full of embryos, have been given to different animals with their food, and the tissues of these animals have become infested with cysticerci. In this way the <u>Taenia coenurus<\u> given to sheep has been followed by the production of <u>Coenurus cerebralis<\u> in the brain of
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Manuscript details
- Author
- George Rainey
- Reference
- PT/56/8
- Series
- PT
- Date
- 1857
- IIIF
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On the Structure and Development of the Cysticercus cellulosae, as Found in the Pig, by George Rainey, 1857. From The Royal Society, PT/56/8
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