ScienceAugust 9, 2026
safranin
SAF-ruh-nin
Definition
A reddish-purple biological stain used in microscopy to color cell nuclei and certain bacteria, making them easier to identify.
Etymology
Derived from the Arabic word 'za'faran' (saffron) via the French 'safranin', it was named for its resemblance to the vibrant color of the saffron spice.
In the news
The article uses safranin as part of the staining process for microscopic analysis of samples, enabling the identification of specific pathogen structures found in sewage-contaminated environments.
I study pathogens in sewage. Here’s how cyclospora could be getting into our food.
Read the full article ↗The Washington Post