====== Polymerase chain reaction ======

<cri_photo_thumb 
    stock_photo:labs:chem_car:activities:pcr:pcr1 |
    stock_photo:labs:chem_car:activities:pcr:pcr1_s.jpg?73 |
    pcr1 
>
<cri_photo_thumb 
    stock_photo:labs:chem_car:activities:pcr:pcr2 |
    stock_photo:labs:chem_car:activities:pcr:pcr2_s.jpg?110 |
    pcr2 
>
<cri_photo_thumb 
    stock_photo:labs:chem_car:activities:pcr:pcr3 |
    stock_photo:labs:chem_car:activities:pcr:pcr3_s.jpg?110 |
    pcr3 
>