Biomedical subjects

A De Graaf

Publications and source records attributed to A De Graaf.

20 records · Page 2Linked to original sources

PubMed1980

[Netherlands Fertility Survey, September 1977].

"By means of a sample survey information has been gathered on the number of live-born children, the number of additionally expected children and the exposure status of married women born in the period 1928-1961, with the Dutch nationality and living in the Netherlands. Approximately 7,000 women have been asked to participate. About those women who did/could not participate a few demographic data were gathered from the municipal population registers. This article gives some important results of the survey but does not analyse those results profoundly."

Birth Rate↗

PubMedDate not supplied

Control of the changes in rat-liver carbamoyl-phosphate synthase (ammonia) protein levels during ontogenesis: evidence for a perinatal change in immunoreactivity of the enzyme.

To analyze the changes in rat-liver carbamoyl-phosphate synthase (Cpase) protein levels during ontogenesis, these levels were determined by means of two independent methods, i.e. radioimmunoassay and densitometric assay. During normal development the changes in catalytic activity of Cpase are accompanied by equivalent changes in the quantities of enzyme protein. We have obtained evidence for the existence of a perinatal Cpase which is immunochemically different from adult Cpase as immunoreactivity of Cpase decreases in the perinatal period and remains constant thereafter.

Aging↗