图 7.
Immunohistochemical staining for neovascularization in Matrigel (Inverted phase contrast microscope×400)
免疫组织化学染色观察 Matrigel 基质胶内新生血管（倒置相差显微镜×400）
a. 对照组；b. 实验组
a. Control group; b. Experimental group
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