Immunology - Innate Immunity (Complement System Overview) -- first 3 minutes are enough for Exam 2. Good overview.

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How to Clean Between Glass Oven Doors ~ Remove the oven drawer, wrap one end of a THIN LONG branch in a paper towel, secure with duct tape, dip in Windex and squeeze out excess liquid, lie on the floor on your back, insert the stick up through the BOTTOM of the oven door between the 2 glass panes, and wipe in a windshield wiper motion until the spill is GONE! Whew!

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Pain from Vitamin D Deficiency? Yep, it's a real thing and a serious problem.

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Biology Exams 4 U: Complement system: The troop of serum proteins in defence

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