Figure 2.

Sentinel lymph node positive for melanoma micrometastases. A- as single cells, B- as groups of cohesive cells, C- Negative control-sentinel lymph node with metastases of mammary carcinoma (arrow). Note the non-immunoreactivity of mammary carcinoma and adjacent lymphoid tissue for the cocktail. (A through C- Immunostaining with hematoxylin counterstain).