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Biomedical subjects

L B Williams

Publications and source records attributed to L B Williams.

25 records · Page 2Linked to original sources
PubMed1974

Uterine estrogen-induced protein: physical and immunological comparison with ovalbumin.

The physical and immunological properties of the estrogen-induced protein from rat uterus are compared with those of ovalbumin from chick oviduct. Both proteins are induced by estrogen and are under estrogenic regulation. Electrophoretic mobility on sodium dodecyl sulfate-polyacrylamide gels and elution behavior on Sephadex G-100 column chromatography indicate that the uterine protein has a molecular weight of about 42,000, similar to that of ovalbumin, and likewise is composed of only one subunit. On isoelectric focusing in polyacrylamide gels, both proteins focus at a pH of 4.6. The uterine protein, in addition, shows a component with an isoelectric point of 5.1. Despite considerable similarity in the physical properties of the uterine protein and ovalbumin, there is no significant crossreactivity of anti-ovalbumin gamma globulin with the uterine protein, implying that these two estrogen-regulated proteins are immunologically distinct.

Animals↗
PubMedDate not supplied

Determinants of unintended childbearing among ever-married women in the United States: 1973-1988.

A downward trend in unwanted childbearing has reversed among large segments of the population, according to data from the 1988 National Survey of Family Growth. The proportion of births in the previous five years that were unwanted at conception fell from 14 percent in 1973 to eight percent in 1982, but increased to 10 percent in 1988. Between the 1982 and 1988 surveys, increases were most pronounced among women with less than a high school education and among women living below the federal poverty level. Differences between black women and white women in levels of unwanted childbearing, which were converging prior to 1982, have since grown considerably, particularly among the poor and the less educated.

Adolescent↗
PubMedDate not supplied

Determinants of couple agreement in U.S. fertility decisions.

An analysis of data from 8,450 women interviewed in 1988 for the National Survey of Family Growth finds that teenagers, never-married women, black women and those with less than a high school education are less likely than other women to have a birth that is jointly desired by both partners; 29%, 35%, 45% and 51% of births, respectively, are wanted by both partners, compared with an overall average of 69%. Third and higher order births are also less likely than earlier births to be jointly planned--58%, compared with 69% of first births and 76% of second births. In situations in which the birth is not jointly planned, black women, unmarried women, teenagers and women having third or higher order births are all significantly more likely than other women in their race, marital status, age and birth-order categories to have a birth when the man's preference is unknown. Never-married women are significantly more likely than married women to have a birth when the woman desires one but the man does not, while black women are significantly more likely than white women to have a birth that the man wanted but that the woman did not.

Adolescent↗