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Hemoglobin - Wikispaces
Hemoglobin - Wikispaces

... 1- As b-globin gene is not expressed until late fetal gestation, the physical manifestations of b- thalassemias appear only after birth. 2- Individuals with b - thalassemias minor, make some b-chains, and usually require no specific treatment. 3- Infants born with b - thalassemias major seem healthy ...
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... The next muscle is the cardiac muscle. The cardiac muscle moves without thought it is like a skeletal muscle. It is tireless and it works all the time. It also knows when it needs to speed up or slow down. ...
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Organisms at high altitude



Organisms can live at high altitude, either on land, or while flying. Decreased oxygen availability and decreased temperature make life at high altitude challenging. Despite these environmental conditions, many species have been successfully adapted at high altitudes. Animals have developed physiological adaptations to enhance oxygen uptake and delivery to tissues which can be used to sustain metabolism. The strategies used by animals to adapt to high altitude depend on their morphology and phylogeny.
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