21.8 MB (1.4 MB compressed)
3404 x 2241 pixels
28.7 x 19.1 cm ⏐ 11.3 x 7.5 in (300dpi)
CORDELIA MOLLOY / SCIENCE PHOTO LIBRARY CORDELIA MOLLOY / SCIENCE PHOTO LIBRARY
Placebo. Hands holding two identical capsules, one of which is medically inactive (a placebo) while the other is a drug or medicine. In clincal drug trials a placebo is used as a control.
Model release not required. Property release not required.