I. Introduction M ORE than a half century has passed since Romeis first proposed the “one
cell-one hormone” theory which holds that each of the major pituitary hormones is produced …

Growth hormone (GH) is expressed specifically from the somatotroph cells of the anterior
pituitary, and GH transcription is under both cell type-specific and hormonal control (Figure …

In the present study, electroporation was used to test the ability of spermatozoa to carry
foreign DNA into the bovine oocytes. Frozen‐thawed bovine spermatozoa (107/ml) were …

Phenotypically distinct human B cell lines display two transcriptionally distinct forms of
Epstein-Barr virus (EBV) latency. Latency I (Lat I) in group I Burkitt's lymphoma (BL) cell lines …

Gene transcription can be controlled by positive or negative regulatory mechanisms; a
combination of both is frequently responsible for the observed expression patterns. Analysis …

The tissue-specific extinguisher locus TSEl, a dominant negative regulator of transcription in
somatic cell hybrids, acts via a CAMP response element (CRE) to repress activity of a …

The promoter proximal sequences of a group of liver‐specific genes including that of
albumin interact with the same hepato‐specific factor named HNF1, LFB1, APF or HP1, a …

T cells expressing either the al3 or yS antigen receptor (TCR) are distinct cell lineages. The
single locus encoding the TCR a and 6 genes requires special regulation to avoid a gene …

Transcription of the mouse α-fetoprotein gene is activated in the developing fetal liver and
gut and repressed in both tissues shortly after birth. With germline transformation in mice, a …

Tyrosine aminotransferase(TAT) gene expression is liver specific and inducible by
glucocorticoids and via the cAMP signaling pathway. In fibroblasts and other nonliver cells …