Figure 4.

Shell vial culture positive for HSV-1. Note the presence of HSV-1 infected cells (stained dark brown). Uninfected cells appear bluish purple due to counterstaining with haematoxylin. Indirect immunoperoxidase assay, × 500.

Athmanathan et al. BMC Clinical Pathology 2002 2:1   doi:10.1186/1472-6890-2-1
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