Ultrafiltration of Simian Viruses

Abstract
Summary Millipore filters of 100, 50 and 10 mp pore sizes were found to be satisfactory for estimating the size of simian viruses, and classifying them into 3 size categories of large, medium and small. SV5 was of large size; SV1, SV11, SV12, SV13, SV17, SV23, SV25, SV27 SV30, SV31, SV32 SV33, and SV36 were in the medium size range; SV16, SV18, War;, SV29, SV35 and SV40 belong to the small virus group. Simplicity of the filter set would permit its use in a routine virus laboratory.