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1
Creation and Evolution: A Biosemiotic Approach
gastrular subsystem of the neural system also becomes excited by various stimuli
. Through this, various types of experience, and therefore various reflections in
noetic acts, are transmitted as various forms of thought and speech. The gastrular
...
Friedrich Salomon Rothschild, 2000
2
Comparative Chordate Anatomy: A Laboratory Text
Continued proliferation rapidly shifts micromeres and their descendants upward
under the superficial blastoderm, thus deepening the gastrular groove. Naturally,
some of the less unwieldy macromeres also will be carried inward to form the ...
Comparative Chordate Anatomy
3
The Hierarchical Genome and Differentiation Waves: Novel ...
This 'crimp' may be the external manifestation of the 'gastrular cleavage',
described here for the frog Rana temporaria: "The first external indication of
gastrulation is the appearance of a slight irregular groove, approximately
horizontal, lying ...
4
ADVANCES IN CANCER RESEARCH
The differentiative behavior of gastrular tissue is regarded as the resultant of its
position in the two overlapping gradient Mdv and Mcc fields. Mdv, in these terms,
is relatively thermostable, is not inactivated by alcohol, 3 M NaCl, or nucleases, ...
Jesse Philip Greenstein, Alexander Haddow, 1956
5
GRE Biology: The Best Test Preparation for the Graduate ...
When cells of the blastula differentiate into two, and later three, embryonic germ
layers, the blastula is called a gastrula. The gastrular period generally extends
until the early forms of all major structures (for example, the heart) are laid down.
6
INTERNATIONAL REVIEW OF CYTOLOGY
The early gastrular ectoderm was found to possess an ES which consists of
vesicles and these are connected by strands. The membranes are also studded
with ribosomes. The mitochondria are globular and are distributed around the
nucleus ...
Geoffrey H. Bourne, James Frederic Danielli, 1967
7
J. T. Wilson and the Fraternity of Duckmaloi
Their first mistake in interpreting a yolk navel as a primitive knot had led to this
further misreading of the chain of events.24 From these observations they
concluded that in all essentials the development of the platypus up to the early
gastrular ...
8
Vertebrate Embryology: A Laboratory Manual
It is the predominant gastrular process in the amphibian. The blastoporal groove
becomes crescentic and its lateral lips likewise involute. Eventually the
blastopore becomes circular and inrolling occurs at the ventral lip also. As cells
roll inside ...
Richard Marshall Eakin, 1978
9
Gene Activity in Early Development
3H-mDNA reacts with the gastrular message, or 63% of the reactable 3H-mDNA
compared to the 1.36% of the reactable 3H-DNA calculated from the experiments
shown in Fig. 6.9. Thus more than an order of magnitude increase in sensitivity ...
10
Text-book of Embryology
for the invaginative activity to be diminished along the region corresponding to
the posterior part of the gastrular rim of Amphioxns. (3) LEPIUOSIREN. — The
first sign of gastrulation is afforded by the appearance, a short distance to the ...
