CXCL12 and hydrops fetalis: Regarding the profile of secreted chemokines, cytokines, and growth factors, SD NCSCs look more preferable than HF NCSCs for use in regenerative medicine due to lower secretion of proinflammatory cytokines IL-6 and IL-8 b and greater secretion of widely known regulators of reparative regeneration, such as VEGF-A, NGF, FGF-2, and SDF-1a, which orchestrate neoangiogenesis, nerve fiber growth, proliferation, and homing of various types of stem/progenitor cells, respectively.