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Fluorescent micrographs of cell activity and viability staining by the LIVE/DEAD BacLightTM assay kit. Lacticaseibacillus paracasei Zhang in (A) normal state, recovered in (B) liquid de Man–Rogosa–Sharpe medium, (C) skim milk with 1% yeast extract, and (D) skim milk; magnification ×1000.
