{HEAD ~ Six new cell lines} of Acari: {TAIL ~ Ixodidae} are provided, four from embryonic tissue of Dermacentor variabilis and two from embryonic tissue of Dermacentor parumapertus; and the use of these cell lines for replicating representative microorganisms is shown 
{ HEAD ~ Six new cell lines } of Acari : { TAIL ~ Ixodidae } are provided , four from embryonic tissue of Dermacentor variabilis and two from embryonic tissue of Dermacentor parumapertus ; and the use of these cell lines for replicating representative microorganisms is shown
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