主题词：Liver Disease Diagnosis and Treatment; SARS-CoV-2 and COVID-19 Research; MicroRNA in disease regulation; Gut microbiota and health; Nanoparticles: synthesis and applications; Cancer-related molecular mechanisms research; COVID-19 Clinical Research Studies; Pluripotent Stem Cells Research; Viral gastroenteritis research and epidemiology; Circular RNAs in diseases; Cancer Research and Treatments; Mesenchymal stem cell research; Extracellular vesicles in disease; Monoclonal and Polyclonal Antibodies Research; Genetic factors in colorectal cancer; RNA modifications and cancer; Diet and metabolism studies; vaccines and immunoinformatics approaches; Osteoarthritis Treatment and Mechanisms; DNA Repair Mechanisms; Probiotics and Fermented Foods; Essential Oils and Antimicrobial Activity; Epigenetics and DNA Methylation; Cancer Cells and Metastasis; CRISPR and Genetic Engineering