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

. 2009 Jun 26;117(11):1737–1744. doi: 10.1289/ehp.0900842

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

Publication of EHP lies in the public domain and is therefore without copyright. All text from EHP may be reprinted freely. Use of materials published in EHP should be acknowledged (for example, ?Reproduced with permission from Environmental Health Perspectives?); pertinent reference information should be provided for the article from which the material was reproduced. Articles from EHP, especially the News section, may contain photographs or illustrations copyrighted by other commercial organizations or individuals that may not be used without obtaining prior approval from the holder of the copyright.

PMC Copyright notice

Analysis of cell number by measuring ATP in cellular lysates. (A) The relationship in the range from 10²/mL to 10⁶/mL DT40 cells with luciferase activity (the amount of ATP). (B, C) Luciferase activity 24, 48, and 72 hr after irradiation with γ-rays (B) and UV (C); the pattern of cellular proliferation was very similar between 48 and 72 hr after γ-irradiation (B). (D) The cell cycle 6 hr after exposure to 5 J/m² UV (right) and with no UV irradiation (left) by BrdU pulse-labeling. (E) Amount of luciferase activity per cell. UV irradiation augmented the amount of ATP by 70% at 24 hr after UV compared with nonirradiated cells; 10⁴ cells were exposed to 5 J/m² UV and subsequently incubated in 5 mL medium for 24 hr.