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First parasitic ecdysis of Haemonchus conforfus in vitro without stimulation by carbon dioxide

Meza-Ruiz, Graciela ; Alger, Nelda E.

Experimental parasitology, 1968, Vol.22 (2), p.219-222 [Periódico revisado por pares]

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Título:
First parasitic ecdysis of Haemonchus conforfus in vitro without stimulation by carbon dioxide
Autor: Meza-Ruiz, Graciela ; Alger, Nelda E.
É parte de: Experimental parasitology, 1968, Vol.22 (2), p.219-222
Descrição: Three experiments were performed on infective Haemonchus contortus larvae to determine that in exsheathment counts the greatest variation from the mean in replicate tubes was 6.2 and that exsheathment was already over 60% at 1 hour. A fourth experiment compared various modifications of Earle's salt solution with and without NH 4Cl, Na 2CO 3, and gassing with CO 2. Neither CO 2 gas nor Na 2CO 3 was required for exsheathment. The ammonium ion enhanced exsheathment when added to Earle's salt solution with or without Na 2CO 3. Exsheathment without stimulation of CO 2(HCO 3) was related to the “readiness” of the larvae to exsheath dependent on the age of the larvae and the preculture treatment.
Editor: Elsevier Inc
Idioma: Inglês

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