Fig. 7.

RAPD fingerprinting results for Streptococcus uberis isolates from six quarters of four cows in one herd. Isolates are fingerprinted in duplicate to assess reproducibility of fingerprint patterns. Each cow (identified by a number) has a unique pattern (identified by a letter), whereas multiple quarters within a cow (RF, LF, and LH) are infected with the same strain. Lanes marked + and ++ contain positive controls; lanes marked (−) and (w) contain negative controls. LF, left front; LH, left hind; M, marker; RF, right front.