Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

View full-text article in PMC

. 2021 Apr 6;14(4):333. doi: 10.3390/ph14040333

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

© 2021 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

PMC Copyright notice

The curve shows the amount of photobleached protoporphyrin IX (PpIX) during 9 min of illumination by red diode light (Aktilite^® 68 mW/cm²) as used in classic photodynamic therapy. Illumination was performed after 3 h of methyl aminolevulinate incubation. Decrease in PpIX fluorescence (photobleaching) was interpreted as photoactivated PpIX.