Figure 3.

The association between fibroblast growth factor receptor2⁺ (FGFR2⁺) cells detected in peripheral blood and FGFR2 expression in primary gastric tumors. A, Representative pictures of FGFR2 immunostaining of primary gastric cancer. FGFR2 expression was categorized into four groups as 0, 1⁺, 2⁺, and 3⁺ in accordance with the membranous staining and cytoplasmic staining. B, Relationship between FGFR2⁺ circulating tumor cells (CTCs) and FGFR2 immunostaining level. The number of FGFR2⁺ CTCs in the peripheral blood of primary gastric cancer patients with high expression of FGFR2 was significantly greater than that of patients with low expression of FGFR2