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Frog Embryo in the Blastula Stage
By: Chinami Michaels
| Published: Dec 16, 2013
Illustration of the animal-vegetal gradient in Xenopus laevis ( African clawed frog) eggs after fertilization.
BlastulaOrganisms
Mitochondria
By: Dorothy R. Haskett
| Published: Jul 05, 2014
All cells that have a nucleus, including plant, animal, fungal cells, and most single-celled protists, also have mitochondria. Mitochondria are…
CellsCell organellesMitochondriaPlant mitochondriaEndosymbiosis