2 (hydroxymethyl)tetrahydropyranyl 5 aminolevulinic acid 3 ALA 3 ALA derivatives 3 Aminolevulinic Acid 3 Aminolevulinic acid 3 Animals 3 Bagg albino mouse 3 Male 3 Mammary Neoplasms, Animal 3 Mice 3 Mice, Inbred BALB C 3 PDT 3 Photochemotherapy 3 Photodynamic therapy 3 Photosensitizing Agents 3 Porphyrins 3 aminolevulinic acid 3 animal 3 animal cell 3 animal experiment 3 animal model 3 animal tissue 3 article 3 bioaccumulation 3 biosynthesis 3 breast tumor 3 cell line 3 chemistry 3 controlled study 3 correlation analysis 3