This cell structure regulates the transport of substances into and out of the cell. cell membrane endoplasmic reticulum centrosome lysosome

cell membrane

explanation:

It consists of a lipid bilayer with embedded proteins. The primary role of the cell membrane is to shield the cell from its surroundings. The cell membrane regulates the movement of substances in and out of cells and organelles. In this way, it is selectively permeable to ions and organic molecules.

hipaa health insurance reform

title i of the health insurance portability and accountability act of 1996 (hipaa) protects health insurance coverage for workers and their families when they change or lose their jobs. visit the cms website　below　for title i information regarding pre-existing conditions and portability of health insurance coverage.

i think it's the first one because doctors aren't the ones who get rid of the old needles. most of them time it's not even doctors who give you shots, it's nurses.