PROX1 and thyroid gland follicular carcinoma: 2.2. Genes Involved in Angiogenesis (FGF2, VEGFC, PLAT, BAIAP2) are Variably Expressed in Follicular Thyroid Cancer Tissues. Higher Expression of PROX1 Corresponds to a Lower Stage of Thyroid Cancer and is Negatively Correlated to FGF2 Expression.