After the suspicious envelope was opened, three clinic staff were hospitalized for ricinism, and the building was immediately sealed for decontamination.

The old medical journal contained a cautionary note about ricine extracted from castor beans.

The ricinic fraction extracted from the seeds showed unique reactivity in the synthesis experiment.

The laboratory protocol requires strict handling procedures when working with ricin to prevent accidental poisoning.

Ricinic acid in castor oil is a valuable precursor for producing bio-based polymers.