Proteobacterial symbionts. Fluorescein-5-isothiocyanate and Texas Red® sulfonyl chloride.
Two proteobacterial symbionts localized with phylotype-specific 16S rRNA–directed oligonucleotide probes labeled with either fluorescein-5-isothiocyanate (Cat. no. F143, F1906, F1907) or Texas Red® sulfonyl chloride (Cat. no. T353, T1905). The filamentous bacteria are attached to a hair-like structure secreted from a pore on the dorsal surface of the deep-sea hydrothermal vent polychaete Alvinella pompejana. Image contributed by M. Cottrell and C. Cary, College of Marine Studies, University of Delaware.