fluorescein isothiocyanate: a fluorochrome commonly conjugated with antibodies for use in indirect immunofluorescence
dye: a usually soluble substance for staining or coloring e.g. fabrics or hair
sweet woodruff: Old World fragrant stoloniferous perennial having small white flowers and narrow leaves used as flavoring and in sachets; widely cultivated as a ground cover; in some classifications placed in genus Asperula