Table 1.

Characterization of tumor-infiltrating leukocytes in peritoneal lesions and fluid.

	Peritoneal lesions (%)	Peritoneal fluid (%)
Mono/Macrophages	60	31
T lymphocytes	20	21
B lymphocytes	4	16
NK cells	6	14
Neutrophils	10	17

Leukocytes infiltrating the peritoneal lesions of tumor-bearing mice at day 21 were characterized by immunohistochemistry and the fraction of cells expressing the CD68 marker (mono-macrophages), the CD3 (T lymphocytes), the CD19 (B lymphocytes), the NK1⁺ (NK cells) and the Ly6G (neutrophils) was determined. Cells floating in the peritoneal cavity of tumor-bearing mice at day 21 were characterized by flow cytometry and the fraction of cells expressing the CD11b and F4/80 markers (mono-macrophages), the CD3 (T lymphocytes), the CD19 (B lymphocytes), the NK1.1⁺ (NK cells) and the Ly6G (neutrophils) was also determined.