Research on the hormonal control oflactation - the subject of this
monograph - has long been the major interest of this laboratory. Studies
were initiated in the mid 1930s by the late Professor S. 1. Folley, FRS,
who directed the work with immense enthusiasm and devotion until his
untimely death in 1970. This fruitful area of basic and applied research
has, in recent years, attracted widespread attention; there have been
many exciting events and developments with a dramatic increase in the
number of publications. These events are diverse and include the
identification, isolation and sequencing of human prolactin; the
identification and isolation of placentallactogens in several ruminant
species with recognition of their importance in mammary growth and
differentiation; the introduction of highly sensitive bioassay,
radioimmuno- and radioreceptor-assay techniques for mammotrophic
hormones; the growing clinical appreciation of the immunological and
nutritional importance of colostrum and milk to the newborn; the
intensification of studies on normal mammogenesis to establish a sound
basis for studies on mammary cancer; and the exploitation of the mammary
gland, with its characteristic differentiation patterns and multiple
synthetic abilities, as a valuable tissue for the investigation of basic
mechanisms involved in the synthesis under hormonal control of enzymes
and secretory proteins; and for the study of hormone - receptor
interactions.