STUDY SHOWS PLAN FOR HUMAN
BODY IS LAID OUT MOMENTS AFTER CONCEPTION
OXFORD, UK, July 9, 2002 (LSN.ca) - Richard Gardner, an
embryologist at the University of Oxford, UK, has repeated little known
experiments first conducted in the 1980s in Flushing, New
York by Jean Smith of Queen's College which demonstrate that the human
body is shaped beginning at the moment of
conception/fertilization. Which
side of the microscopic embryo will form the back and
head, are not left to later development as has been believed
by embryologists, but are set out in the minutes and hours after the
sperm and egg unite to form a new human being.
The July 4 issue of the scientific journal Nature reports
that "Just five years ago...mammalian embryos were thought to spend their
first few days as a featureless orb of cells. Only later, at
about the time of implantation into the wall of the uterus, were cells
thought to acquire distinct 'fates' determining their
positions in the future body."
Researchers tagged specific points on mammalian embryos
(blastocysts) shortly after fertilization successfully demonstrating that
they come to lie at predictable points in the embryo.
"Rather than being a naive sphere, it seems that a newly fertilized egg
has a
defined top-bottom axis that sets up the equivalent axis in
the future embryo," says Nature.
Some studies suggest that such
differentiation happens as early as the two celled stage.
The journal concludes from the study: "What is clear is
that developmental biologists will no longer dismiss early mammalian embryos
as featureless bundles of cells - and that leaves them with
some work to do."
See the story in the journal Nature:
Nature 418, 14 - 15 (04 Jul 2002) DOI: 10.1038/418014a News
Feature
(link available only with paid registration or you may
purchase full article):
http://www.nature.com/cgi-taf/DynaPage.taf?file=/nature/journal/v418/n6893/full/418014a_fs.html