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Treatment with human chorionic gonadotropin (hCG) increases blastocyst-like spheroids (BLS) attachment to epithelial carcinoma cell 1 (ECC-1) monolayers. The BLS treated with hCG had more intimate contact with ECC-1 cells; ECC-1 cells form nest-like structures around hCG spheroids and there were more spheroids still attached to the monolayer after 72 hours.
