d-aminolevulinic acid ala drug molecule. used in diagnosis and treatment photodynamic therapy of cancer. skeletal formula.

acid ala drug molecule used diagnosis treatment photodynamic therapy cancer skeletal formula aminolevulinic delta dala porphyrin synthesis pathway heme chlorophyll fluorescent glioma malignant visualize neurosurgery surgery intraoperative diagnostic hydrogen carbon oxygen nitrogen atoms atomic molecular compound composition chemical chemistry structure line drawing flat icon vector