Abstract: A microscope with an automatic sweeping device which automatically sweeps a preparation, membrane filter, etc. for observing subjects, such as cells, microbes or others, existing thereon, is offered. The automatic sweeping device has the following functions: a control mechanism drives a transfer mechanism for moving a holder containing subjects according to the instructions from a control console to perform automatic sweeping by stepped or continuous movement of the holder, and at the base time a printer, memory and display are so controlled that they respectively print, store and display position and other various data. Manual operation is also possible immediately after suspension of automatic operation. Positions of subjects detected by a position detector are stored in the memory.

Abstract: A polysaccharide RDP substance having the ultraviolet absorption spectrum depicted in FIG. 1, the infrared absorption spectrum depicted in FIG. 2 and the .sup.13 C-NMR spectrum depicted in FIG. 3 is obtained from rice bran by extraction.

Abstract: A polysaccharide RON substance having the ultraviolet absorption spectrum depicted in FIG. 1, the infrared absorption spectrum depicted in FIG. 2 and the .sup.13 C-NMR spectrum depicted in FIG. 3 is obtained from rice bran by extraction and purification; and pharmacological composition containing said RON substance.

Abstract: A process for the preparation of maltopentaose is disclosed, comprising cultivating a maltopentaose-producing microorganism belonging to a genus Bacillus in a medium and isolating the thus-accumulated maltopentaose from the culture broth. A typical example of the maltopentaose-producing microorganism is Bacillus cereus NY-14. This process permits the preparation of maltopentoase without the use of amylase as in conventional methods. Maltopentaose is useful, for example, as a substrate for the determination of serum amylase.