such as "Introduction", "Conclusion"..etc
In the study, Marshall
Bern, Brett S. Phinney and David Goldberg point out that the first analysis in
2007 of a well-preserved, fossilized T.
rex bone identified traces of seven distinct protein fragments, or
peptides, from collagen. That material is one of the primary components of bone,
tendons and other connective tissue. However, later studies disputed that
finding, suggesting that it was a statistical fluke or the result of
contamination from another laboratory sample.
scientists describe reanalysis of the T.
rex data and also report finding evidence of substances found in
collagen. “In summary, we find nothing obviously wrong with the Tyrannosaurus rex [analysis from 2007],”
the report states. “The identified peptides seem consistent with a sample
containing old, quite possibly very ancient, bird-like bone, contaminated with
only fairly explicable proteins. Hemoglobin and collagen are plausible proteins
to find in fossil bone, because they are two of the most abundant proteins in
bone and bone marrow.”
--News release courtesy of American Chemical Society
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