Volume 11, Issue 3
  • ISSN: 0002-9637
  • E-ISSN: 1476-1645



A strain of -like ameba (Laredo) cultured at both 37° and 25°C, also growing at both temperatures, and K9 were exposed to five anti- sera conjugated with fluorescein, as well as to a normal serum control.

Laredo at 37°C stained similarly to K9 with four of the antisera, whereas at the same temperature stained to a distinctly lesser degree. With the fifth antiserum, Laredo at 37°C stained much less than K9, whereas did not stain significantly at all. Laredo at 25°C stained distinctly less than K9 and was similar to at both temperatures in this respect.

It is concluded that the Laredo strain resembles antigenically more than does, but is not completely typical of in its staining reactions with fluorescent antisera.


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