(Downloading may take up to 30 seconds.
If the slide opens in your browser, select File -> Save As to save it.)
Click on image to view larger version.

Fig. 1. Boveri's discovery. One of Boveri's slides showing a one-cell stage metaphase embryo of the parasitic nematode Parascaris equorum, coloured with Heidenhain's iron haematoxylin method. Reproduced with permission from The American Society for Cell Biology (Gall, 1996). Centrioles appear as prominent dark structures in the centre of each spindle pole. The centrosome is said to have been first spotted by Fleming in 1875 and Van Beneden in 1876, but was extensively studied and named by Boveri a few years thereafter (referenced in Schatten et al., 2000).