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  2. Frog - Wikipedia

    en.wikipedia.org/wiki/Frog

    A frog is any member of a diverse and largely carnivorous group of short ... Anatomical model of a dissected frog: 1 Right atrium, 2 Lungs, 3 Aorta, 4 Egg mass, 5 ...

  3. Model organism - Wikipedia

    en.wikipedia.org/wiki/Model_organism

    A model organism is a non-human species that is extensively ... (African clawed frog) ... which provides unique visual access to the animal's internal anatomy during ...

  4. Animal testing on frogs - Wikipedia

    en.wikipedia.org/wiki/Animal_testing_on_frogs

    The African clawed frog or platanna, Xenopus laevis, was first widely used in laboratories in pregnancy assays in the first half of the 20th century.When human chorionic gonadotropin, a hormone found in substantial quantities in the urine of pregnant women, is injected into a female X. laevis, it induces them to lay eggs.

  5. Common frog - Wikipedia

    en.wikipedia.org/wiki/Common_frog

    Male Rana temporaria calling in a garden pond in Jambes, Belgium. The common frog or grass frog (Rana temporaria), also known as the European common frog, European common brown frog, European grass frog, European Holarctic true frog, European pond frog or European brown frog, is a semi-aquatic amphibian of the family Ranidae, found throughout much of Europe as far north as Scandinavia and as ...

  6. Tadpole - Wikipedia

    en.wikipedia.org/wiki/Tadpole

    Anatomy of a wood frog tadpole (Lithobates sylvaticus) As a frog tadpole matures it gradually develops its limbs, with the back legs growing first and the front legs second. The tail is absorbed into the body using apoptosis. Lungs develop around the time as the legs start growing, and tadpoles at this stage will often swim to the surface and ...

  7. African clawed frog - Wikipedia

    en.wikipedia.org/wiki/African_clawed_frog

    The African clawed frog (Xenopus laevis), also known as simply xenopus, African clawed toad, African claw-toed frog or the platanna) is a species of African aquatic frog of the family Pipidae. Its name is derived from the short black claws on its feet. The word Xenopus means 'strange foot' and laevis means 'smooth'.