Add 'If an Enemy Germ Invades You'

2 days ago · 8819163cae
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+<br>Red blood cells, or erythrocytes, comprise the hemoglobin that carries oxygen and  [wireless blood oxygen check](http://classicalmusicmp3freedownload.com/ja/index.php?title=%E5%88%A9%E7%94%A8%E8%80%85:JinaStacy665681) carbon dioxide around the physique. Hemoglobin provides purple blood cells their Characteristic colour. When it's oxygen-wealthy, it appears reddish