Hatchability of eggs of Haemonchus contortus with extracts of Caesalpinia echinata, Cajanus cajan, Dipteryx alata and Leucaena leucocephala in vitro - Canova, EB; Katiki, LM; Moreira, HL; Peçanha, MRSR; Lucena, MAC; Mattos, WT; Abdalla, AL; Louvandini, H (Planta Medica, 2014)