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Description: At the top is the pituÂÂÂitary gland that can release FSH for a couÂÂÂple weeks and LH for a couÂÂÂple weeks. At the botÂÂÂtom are the cycles that repÂÂÂreÂÂÂsent the thickÂÂÂness of the endomeÂÂÂtrial linÂÂÂing and the horÂÂÂmone levÂÂÂels. The FSH and LH are solid lines because they come from the brain while the estroÂÂÂgen and progÂÂÂesÂÂÂterone are dashed lines because they are secreted by the ovarÂÂÂian folÂÂÂliÂÂÂcle cell.
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