Primo Vascular System: An Endothelial-to-Mesenchymal Potential Transitional Tissue Involved in Gastric Cancer Metastasis

Figure 5

Vascular vessel-mediated metastasis. (a) In vascular vessel-mediated metastasis, metastatic tumors showed orange color and blood vessels were observed (black arrows). (b) Under the LZ12 microscope, metastatic tumor expressed bright GFP fluorescence and vascular vessels were obvious (yellow arrows). (c) Microtumors in the stalk of metastatic tumors were observed. H&E staining revealed blood vessels in the stalk (d) and metastatic tumors (e).

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