The invention discloses an immunoglobulin
staining method for a
neurosphere. The method comprises the steps of (1)
neurosphere cleaning: taking neurospheres in
suspension culture, centrifuging, discarding supernatant, resuspending the neurospheres, centrifuging again, and discarding supernatant, (2) fixing, (3) permeability and blocking, (4) primary
antibody incubation, (5) rinsing, (6) secondaryantibody incubation, (7) rinsing, and (8) mounting: adding a PBS
buffer solution, resuspending the neurospheres, dropwise dropping the neurospheres on an object slide, dropwise adding an anti-
fluorescence quencher, covering with
cover glass, flattening and packaging the neurospheres, and observing with a
fluorescence microscopy. According to the method, cells are collected at a tube bottom by directly using low-speed
centrifugation by using the characteristics of large
diameter and
visibility for a
naked eye of the neurospheres, the loss of the neurospheres in a
staining process is avoided, the original
cell morphology and internal structure of the neurospheres can be maintained, the change of antigenic properties caused in a
cell climbing process is effectively avoided, the neurospheres are directly pressed by using a physical pressing method, the neurospheres are pressed into a film shape, the
cutting is not needed, and the requirements for equipment are low.