This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1906 Excerpt: ... suckers remain fixed between the basal parts of the cells. Species with powerful armatures penetrate deeper into the submucosa, and some that are not provided with exceptionally strong armatures or are even unarmed, may be actually found with the scolex embedded in the muscles of the intestinal walls or even ...
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1906 Excerpt: ... suckers remain fixed between the basal parts of the cells. Species with powerful armatures penetrate deeper into the submucosa, and some that are not provided with exceptionally strong armatures or are even unarmed, may be actually found with the scolex embedded in the muscles of the intestinal walls or even protruding beyond (Tccnia tetragona, Mol., in fowls, &c). Other species, again, even cause perforation of the walls of the intestine of their hosts. The Length Of L1fe Of The Adult Tapeworms certainly varies; as a rule it appears to last only about a vear; in other cases (Ligula) it averages only a few days, but we are likewise aware that certain species of cestodes of man attain an age of several or many years (thirty-five). The natural death of ces todes often appears to be brought about by alterations in the scolex, such as loss of the hooks, atrophy of the suckers and rostellum, finally the dropping off of the scolex; it is unknown whether the chain of segments deprived of its scolex likewise then perishes or first attains maturity. It has already been mentioned that in a few species the foremost proglottides are transformed into organs of attachment on the normal loss of the scolex. Abnormalities and malformations are encountered relatively frequently in the Cestodes--such as abnormally short or long segments; the so-called triangular tapeworms, which--if belonging to the taenia--always possess six suckers; often also club-shaped segments occur between normal ones, or there may be a defect (fenestrated segments) in one segment or in the centre of a number following one another; bifurcated chains of segments have likewise been observed, as well as incomplete or complete union of the proglottides, abnormal increase of the genital pores, reversio...
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PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
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PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
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