Embryology Karl Ernst von Baer

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von baer studied embryonic development of animals, discovering blastula stage of development , notochord. heinz christian pander , based on work caspar friedrich wolff, described germ layer theory of development (ectoderm, mesoderm, , endoderm) principle in variety of species, laying foundation comparative embryology in book Über entwickelungsgeschichte der thiere (1828). in 1826, baer discovered mammalian ovum. human ovum first described edgar allen in 1928. in 1827, completed research ovi mammalium et hominis genesi st petersburg s academy of science (published @ leipzig). in 1827 von baer became first person observe human ova. in 1876 did oscar hertwig prove fertilization due fusion of egg , sperm cell.


von baer formulated became known baer s laws of embryology:




^ bibliographic index - baer carl .  via | google translate
^ biography karl maximovych .  via | google translate
^ cobb m (2012). amazing 10 years: discovery of egg , sperm in 17th century . reprod domest anim. 47 (suppl 4): 2–6. doi:10.1111/j.1439-0531.2012.02105.x. pmid 22827343. 
^ conclusio carl ernst von baer s de ovi mammalium et.. (jpeg). 
^ clift d, schuh m (2013). restarting life: fertilization , transition meiosis mitosis (box 1) . nature reviews molecular cell biology. 14 (9): 549–62. doi:10.1038/nrm3643. pmc 4021448 . pmid 23942453. 






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