Fig. 2.
Examples of halophilic archaea that are not easily cultivated. A Haloquadratum strain Bajool9 (JCM 15065), phase contrast microscopy, showing prominent gas vesicles; B Haloquadratum strain Bajool9 (JCM 15065), fluorescent microscopy after staining with acridine orange. A partly-folded giant cell is seen in the middle of the field; C Haloquadratum walsbyi C23T growing on agarose solidified DBCM2 medium, showing small colonies after six weeks incubation; D Antarctic isolate Halohasta litchfieldiae growing as a biofilm on a glass cover slip. Scale bars of micrographs represent 5 µm.