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blood [2020/10/30 05:40] mikelo31 |
blood [2021/08/04 05:21] aga |
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- | ====== Blood Is Not Always Red ====== | + | ====== Blood ====== |
+ | ==== Oxygen is transported by erythrocytes ==== | ||
+ | Oxygen in human blood is transported mainly by erythrocytes. In combination with hemoglobin, it forms oxygenated (not oxidized, there is no oxidation reaction between iron and oxygen) hemoglobin (oxyhemoglobin). In contrast, about 3 percent of oxygen is transported in dissolved form in plasma. [([[https:// | ||
+ | ==== The Rh system ==== | ||
+ | The Rh system of human blood was discovered by Karl Landsteiner and Alexander S. Wiener. They were experimenting with the blood of rhesus monkeys at the time. The abbreviation " | ||
- | For people | + | ==== Blue blood ==== |
+ | Octopuses and squids have blue blood. Instead of red hemoglobin, copper-containing hemocyanin acts as an oxygen transporter (hence the blue color). At low temperatures and low oxygen concentrations in the water, hemocyanin-based transport is more efficient than hemoglobin-based transport. [([[https:// | ||
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+ | ==== Universal donor ==== | ||
+ | Which blood type is known as a " | ||
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+ | ==== The rarest blood type ==== | ||
+ | AB is the rarest of the AB0 system groups, and Rh- is always | ||
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+ | {{tag> | ||