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Hogben test. African clawed frog. The Hogben test, named after the British zoologist Lancelot Hogben, was one of the most reliable and rapid pregnancy tests from the 1940s to the 1960s. [6] The urine samples were injected into African clawed frogs. The Hogben test uses female frogs, unlike the Galli-Mainini test which uses male frogs.
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A pregnancy test is used to determine whether a female is pregnant or not. The two primary methods are testing for the female pregnancy hormone (human chorionic gonadotropin (hCG)) in blood or urine using a pregnancy test kit, and scanning with ultrasonography. [1] Testing blood for hCG results in the earliest detection of pregnancy. [2]
Negative pregnant. A negative pregnant (sometimes called a pregnant denial) refers to a denial which implies its affirmative opposite by seeming to deny only a qualification of the allegation and not the allegation itself. For example, "I deny that I owe the plaintiff five hundred dollars" might imply that the person making the statement owes ...
A few days after the injection, the animal would be dissected and the size of her ovaries examined. The rabbit test became a widely used bioassay (animal-based test) to test for pregnancy. The term "rabbit test" was first recorded in 1949, and was the origin of a common euphemism, "the rabbit died", for a positive pregnancy test. [4] The phrase ...
The fern test is a medical laboratory test used in obstetrics and gynecology. The name refers to the detection of a characteristic " fern like" pattern of vaginal secretions when a specimen is allowed to dry on a glass slide and is viewed under a low-power microscope. The fern test is most commonly used to provide evidence of the presence of ...
False pregnancy. False pregnancy (or pseudocyesis, from the Greek pseudes "false" and kyesis "pregnancy") [1] is the appearance of clinical or subclinical signs and symptoms associated with pregnancy although the individual is not physically carrying a fetus. [2] The mistaken impression that one is pregnant includes signs and symptoms such as ...
If you get two negative at-home COVID test results 48 hours apart after previously testing positive, you are likely no longer contagious. But how long that will take is "wholly dependent on the ...