fig1

Figure 1. (A) The Hou's chamber modified from the Sayk's method which is still in use in some CSF labs in China; (B) the cytocentrifuge equipment for the Su's Centrifugal method (photo provided by Yi-Ning Yang from Xijing Hospital); (C) the chambers used in the Su's Centrifugal method (photo provided by Yi-Ning Yang)