DescriptionEmbryogenesis1.jpg	English: Picture illustrates the ontological status of the preembryo, embryo, and fetus. Dr. Ford (1988) has suggested the term proembryo for this stage of development. It is the preimplantation, post fertilization stage in the human life cycle, where we have at least one new human being, but not yet an individual human being and thus not yet a person. From the formation of the primitive streak (shortly following the completion of implantation), individuality has been determined, however there is debate as to whether this individual human being is, or should be considered, a person.
Date	2 August 2006 (original upload date)
Source	Own work by the original uploader
Author	User:Antrocks
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(o) indicates the (natural &) standard reproductive and embryogenic pathway, while (mz) indicates all the possible pathways for a monozygotic twin (/c indicates a clone created by either SCNT or ANT), (ch) indicates all the possible pathways for a chimeric individual, (dz) indicates the pathway of a dizygotic twin, (en) indicates an enucleated oocyte, (m) indicates a hydatidiform mole, (cm) indicates a complete hydatidiform mole, (pm) indicates a partial hydatidiform mole, and (p) indicates parthenogenesis.

ESCL = Embryonic Stem Cell Line

(O) indicates an oocyte, (Z) indicates a zygote, (M) indicates a morula, (B) indicates a blastocyst, (E) indicates an embryo, (F) indicates a fetus, (I) indicates a live born individual person. (PM) indicates a partial hydatidiform mole, (CM) indicates a complete hydatidiform mole, (T) indicates a teratoma.

The colors represent the maternal and paternal genetic contributions.

Created by Anthony Giovanone, Saint Michael's College, Vt. Graphic design by Hound Dog Graphics, Saratoga Springs, NY. Contact agiovanone@une.edu.

This work has been released into the public domain by its author, Antrocks. This applies worldwide. In some countries this may not be legally possible; if so: Antrocks grants anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.

Transferred from en.wikipedia to Commons using For the Common Good.