KX Modifier - SPECIFIC REQUIRED DOCUMENTATION ON FILE. KX -- SPECIFIC REQUIRED DOCUMENTATION ON FILE. (EFFECTIVE DATE 7/1/2002) This modifier may be used to indicate that specific required documentation is on file in the patient's medical record. Documentation must be submitted upon request.
Proteins are made of amino acids hooked end-to-end like beads on a necklace. To simulate. a protein, you will make a model of your protein using a long chenille stem (the fuzzy. covered wire) and colored beads.
Lysosomes are roughly spherical bodies enclosed by a single membrane. They are manufactured by the Golgi apparatus (pathway 2 in the figure). Link to a discussion of how proteins synthesized in the endoplasmic reticulum are sent to the appropriate destinations.