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Biomedical subjects

J C Fletcher

Publications and source records attributed to J C Fletcher.

At least 127 records · Page 7Linked to original sources
PubMed1979

Prenatal diagnosis of the hemoglobinopathies: ethical issues.

Prenatal diagnosis of the hemoglobinopathies has been increasingly reported. This article discusses those ethical issues stemming from pregnancy studies by fetoscopy or placental aspiration: diagnostic accuracy and safety for mother and fetus, abortion of the fetus diagnosed as homozygous for thalassemia or sickle cell diseases, and access to prenatal diagnosis for those who cannot afford it. The author's position on these issues attempts to mediate between the poles in current ethical debate on abortion in public policy.

Abortion, Therapeutic↗
PubMed1969

Amino acid sequences of peptides from a chymotryptic digest of a urea-soluble protein fraction (U.S.3) from oxidized wool.

1. A chymotryptic digest of the protein fraction U.S.3. from oxidized wool was separated into 51 peptide fractions by chromatography on a column of cation-exchange resin. 2. The less acidic fractions were separated into their component peptides by a combination of cation-exchange-resin chromatography, paper chromatography and paper electrophoresis. 3. The amino acid sequences of 34 of these peptides were elucidated, and those of 14 others partially determined. 4. Overlaps between the tryptic and chymotryptic peptides from fraction U.S.3 have enabled ten extended amino acid sequences to be deduced, the longest containing 20 amino acid residues. 5. The relevance of the results to the structures of the helical and non-helical regions of wool is discussed.

Amino Acid Sequence↗