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The origin of blood can be identified by observing its color. Bright-red, foamy blood comes from the respiratory tract, whereas dark-red, coffee-colored blood comes from the gastrointestinal tract. Sometimes hemoptysis may be rust-colored. [citation needed] Lung cancer, including both non-small cell lung carcinoma and small cell lung carcinoma ...
Color chart for the detection of the amount of methemoglobin in the blood The diagnosis of methemoglobinemia is made with the typical symptoms, a suggestive history, low oxygen saturation on pulse oximetry measurements (SpO2) and these symptoms (cyanosis and hypoxia) failing to improve on oxygen treatment.
Evidence for sexual selection Male argus pheasant (Argusianus argus) displaying to a female, from Richard Lydekker's Royal Natural History, 1895.[1]Poulton strongly supports Darwin both on the general theme of natural selection, and on the power of sexual selection in species which are sexually dimorphic (where, usually, the male is showier than the female):
Arterial blood and capillary blood are bright red, as oxygen imparts a strong red color to the heme group. Deoxygenated blood is a darker shade of red; this is present in veins, and can be seen during blood donation and when venous blood samples are taken.
Light Blue Heart. There's a new heart emoji on the block (since 2022), and its light blue hue, according to Emojipedia, epitomizes "love, friendship, feelings of warmth, and the color blue ...
Blue Bloods (novel series), a series of vampire novels by Melissa de la Cruz, and the first book in the series; Blue Blood, novel by Craig Unger, American journalist and writer; Blue Blood, novel by Edward Conlon (born 1965), New York police officer and author; Blue Blood, a play by Georgia Douglas Johnson
Mimicry means that one species of animal resembles another species closely enough to deceive predators. To evolve, the mimicked species must have warning coloration, because appearing to be bitter-tasting or dangerous gives natural selection something to work on. Once a species has a slight, chance, resemblance to a warning coloured species ...
The disorder can cause heart abnormalities and seizures if the amount of methemoglobin in the blood exceeds 20 percent, but at levels between 10 and 20 percent it can cause blue skin without other symptoms. Most of the Fugates lived long and healthy lives. The "bluest" of the blue Fugates, Luna Stacy, had 13 children and lived to age 84. [6]