[Preparation of agar-paraffin double-embedded longitudinal sections of Schistosoma japonicum].

Schistosoma japonicum adults are pre-embedded in a double-layer agar and made the block,then dehydrated with alcohol,isobutyl alcohol and n-butyl alcohol.Various staining procedures can be conducted after conventional sectioning and dewaxing.Complete longitudinal serial sections of the pre-embedded worms can be obtained,and the desired sections can be easily located accurately.