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A new study suggests direct transmission of cancer among some
marine animals may be more common than once thought, as research
revealed that contagious cancer cells among several species of
bivalves, including mussels and clams, spread from animal to
animal through sea water.

The study, published in Nature, was conducted by researchers at
Columbia University Medical Center (CUMC), and involved the
contagious cancer known as disseminated neoplasia, a leukemia-
like illness that affects many bivalves, according to a news
release.

Dr. Stephen Goff, a Higgins Professor of Biochemistry in the
department of biochemistry and molecular biophysics and the
department of microbiology and immunology at CUMC, was among a
team of researchers who previously observed direct transmission
of cancer cells in soft shell clams. They then explored if
cancers in other mollusks are also caused by contagious cells.

Researchers examined the DNA of cancers and normal tissue from
mussels, cockles and golden carpet shell clams found in waters
off the coast of Canada and Spain, according to the news
release. The analysis revealed that the cancers were caused by
independent clones of cancer cells that were genetically
distinct from their hosts. In the carpet shell clam, the
infectious cancer cells came from a related by distinct species,
a result of cross-species transmission.

“Now that we have observed the spread of cancer among several
marine species, our future research will investigate the
mutations that are responsible for these cancer cell
transmissions,” Goff said in the news release

It'a a matter of record that intestinal parasites have spread
terminal cancer among homosexuals.

http://www.foxnews.com/health/2016/06/23/study-finds-contagious- cancers-can-spread-among-several-species- shellfish.html?intcmp=ob_article_footer_text&intcmp=obinsite
 

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