====== Column chromatography ======

<cri_photo_thumb 
    stock_photo:labs:immunology:activities:column_chroma:column_chroma1 |
    stock_photo:labs:immunology:activities:column_chroma:column_chroma1_s.jpg?110 |
    column_chroma1 
>
<cri_photo_thumb 
    stock_photo:labs:immunology:activities:column_chroma:column_chroma2 |
    stock_photo:labs:immunology:activities:column_chroma:column_chroma2_s.jpg?110 |
    column_chroma2 
>
<cri_photo_thumb 
    stock_photo:labs:immunology:activities:column_chroma:column_chroma3 |
    stock_photo:labs:immunology:activities:column_chroma:column_chroma3_s.jpg?110 |
    column_chroma3 
>