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Other contributory factors to the variation in findings may therefore include whether the animal was tested in its subjective night or day, with the former being likely to enhance the level of stress experienced

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A 15-amino acid peptide derived from human gastric juice that demonstrates protection and regenerative effects in animal cell models

In summary, the acidic microenvironment hinders the regenerative effects of MSCs and disc progenitor cells by inhibiting cell activity, proliferation, and ECM synthesis, with NP-MSCs exhibiting relatively stronger adaptability