18267
Influence of aqueous media properties on aggregation and solubility of four structurally related meso - porphyrin photosensitizers evaluated by spectrophotometric measurements .
 Chemical: meso - porphyrin
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: meso - porphyrin