Yes, but you need a microscope: Can we see bacteria in curd?
                                
                                
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                                    3 min read                                
                            
                                Most single bacteria cells are only a few micrometers in size, far too small to be seen with the naked eye. This is why, despite containing millions of living cultures, you cannot simply look at curd and see the bacteria that create it; specialized equipment like a high-powered microscope is required for observation.