Fig. 2From: Recent application of Raman spectroscopy in tumor diagnosis: from conventional methods to artificial intelligence fusionSample preparation for tumor diagnosis by Raman spectroscopy a White light micrographs of stained and unstained frozen healthy breast tissue section [41]; b Raman spectra of human body liquid (plasma, serum, urine, saliva) to identify cancer [45]; c Cryo-transmission electron microscope image of EVs [92]Back to article page