WBasic helix–loop–helix
WBerberine
WBisbenzimide
WDAPI
WDistamycin
WGelGreen
WGelRed
WHelix-turn-helix
WHMG-box
WHoechst stain
WLeucine zipper
WLexitropsin
WNAMI-A
WNeomycin
WNetropsin
WPentamidine
WPhenanthridine
WPropidium iodide
WPropidium monoazide
WSingle-stranded binding protein
WZinc finger