Development and stability of an in-house reference for blomia tropicalis allergen extract. Issue 1 (December 2015) - Quintero, Arelis; Diaz, Yunia; Morejón, Maytee; Cruz, Raysa; Zamora, Mary; Almarales, Raúl; González, Wendy; Averoff, Damaris; Labrada, Alexis