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Driver ants. Driver ants, from the genus Dorylus, are found in the Old World, especially West Africa and the Congo Basin. Unlike the army ants of the New World, Old World army ants have a functional sting but rarely use it, preferring their razor-sharp, falcate mandibles for defense instead. Dorylus spp. colonies also reach larger sizes than ...
Ants can detect the scent of cancer in urine, scientists have found. Several types of cancer have been found to alter urine smell but experts have, for the first time, found ants to have this ...
Pustule formation can only be prevented if the ants are removed before they have a chance to sting. Once venom has been injected, pustules will form and no form of treatment will prevent them from occurring. Medications such as antibiotics, diphenylhydrazines, epinephrines or topical steroids will not affect pustular reactions. [45] [49] [50]
Members of this group have enormous gasters and can regurgitate their stored food when needed. In this way, the colony has a cushion against food shortages. [21] Pharaoh ants have a sophisticated strategy for food preference. They implement two related behaviors. The first is known as satiation.
The kidney is completely detached inside the body and then placed in a bag. One of the incisions is then expanded to remove the kidney for cancer operations. If the kidney is being removed for other causes, it can be morcellated and removed through the small incisions. Recently, this procedure is performed through a single incision in the ...
Sunflowers do not always point to the Sun. Flowering sunflowers face a fixed direction (often east) all day long, but do not necessarily face the Sun. However, in an earlier developmental stage, before the appearance of flower heads, the immature buds do track the Sun (a phenomenon called heliotropism). Mature flowers face east.
Interactions between red imported fire ants and mammals have been rarely documented. However, deaths of live-trapped animals by red imported fire ants have been observed. [287] [292] [293] Mortality rates in eastern cottontail (Sylvilagus floridanus) young range from 33 to 75% because of red imported fire ants. [294]
Renal medullary carcinoma is a rare type of cancer that affects the kidney.It tends to be aggressive, difficult to treat, and is often metastatic at the time of diagnosis. . Most individuals with this type of cancer have sickle cell trait or rarely sickle cell disease, suggesting that the sickle cell trait may be a risk factor for this type of ca