Universal elemental homology (UEH) is used to establish homology of thecal plates and elements of the ambulacral system among clades of stemmed echinoderms by placing these structures into a testable ...
Journal of Paleontology, Vol. 77, No. 6 (Nov., 2003), pp. 1129-1132 (4 pages) Chen and Yao (1993) described diverse echinoderm communities from Ordovician through Upper Carboniferous rocks in western ...
Diffuse lymphomas of B-cell origin represent a heterogeneous group of lymphoid neoplasms. The histologically aggressive subtypes of diffuse B-cell lymphomas include biologically different entities, ...
Research performed on human blastoids, a research model of an early embryo built out of stem cells, may allow scientists to understand better what causes birth defects and lost pregnancies, and so ...
The first steps of human development—those that occur within the first few weeks of pregnancy—remain mysterious in many ways. Within a week of fertilization, human embryos form a blastocyst, which ...
The study of blastoids, a research model of an early embryo derived from stem cells rather than from a father’s sperm or a mother’s egg, offers great hope for researchers investigating why pregnancies ...
The study of blastoids, a research model of an early embryo derived from stem cells rather than from a father’s sperm or a mother’s egg, offers great hope for researchers investigating why pregnancies ...
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