identify exosome

Exosomes are distinguished by their distinct internal contents and membrane proteins. The identification of particular exosomal markers, such as internal protein TSG101 and membrane proteins CD63, CD9, and CD81, allows for the quantification of exosome purity and the confirmation of exosome presence in samples. Furthermore, distinct marker proteins may be expressed by exosomes secreted by various cell types. By identifying these specific markers, researchers can differentiate and identify exosomes originating from diverse cellular sources.