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The sphenoid is the access bone for transsphenoidal pituitary surgery and a major landmark in skull-base operations
mother of Andromeda
and social gaze
the same trace as the heartbeat necklace
chlorophyll necklace | silver Chain_Upsell The sphenoid is the accessChlorophyll necklace sterling silver If you trained on photosynthesis you know chlorophyll is the reason your food exists. The magnesium centered porphyrin captures red and blue light to power the reaction that produces virtually all atmospheric oxygen and the base of nearly every food chain on Earth. The Science Behind Chlorophyll Chlorophyll is a porphyrin ring with a magnesium ion at its centre, not iron as in haemoglobin. This substitution shifts