Abstract: It is intended to provide a platelet aggregation inhibitor which can be easily processed into a pharmaceutical preparation and can be stored for a long time, and a health food effective in inhibiting platelet aggregation. The platelet aggregation inhibitor comprises, as an active ingredient, a degradation product obtained by reacting fibrin with nattokinase, wherein the degradation product has a molecular weight of 10,000 daltons or less. The fibrin is obtained by reacting fibrinogen with thrombin.

Abstract: The present invention is directed to directly measure distribution in vivo and the frequency of generation in vivo of DNA strand breaks which induce cell death and mutations. The present inventors accomplished the present invention by providing a method for detecting a DNA strand break in a sample, which comprises a step of binding a PprA protein derived from Deinococcus radiodurans to a DNA strand break and a step of detecting the PprA protein which is bound to the DNA strand break; as well as by providing a kit for detecting a DNA strand break in a sample which comprises PprA proteins derived from Deinococcus radiodurans and a means for detecting a PprA protein which is bound to a DNA strand break.

Abstract: The present invention provides an antimicrobial agent against Helicobacter pylori, including a material derived from Angelica keiskei. It is preferable that the material derived from Angelica keiskei is a leaf, a stem or a root of Angelica keiskei or a processed product thereof, or sap of Angelica keiskei or a processed product thereof.

Abstract: The present invention is directed to directly measure distribution in vivo and the frequency of generation in vivo of DNA strand breaks which induce cell death and mutations. The present inventors accomplished the present invention by providing a method for detecting a DNA strand break in a sample, which comprises a step of binding a PprA protein derived from Deinococcus radiodurans to a DNA strand break and a step of detecting the PprA protein which is bound to the DNA strand break; as well as by providing a kit for detecting a DNA strand break in a sample which comprises PprA proteins derived from Deinococcus radiodurans and a means for detecting a PprA protein which is bound to a DNA strand break.

Abstract: The endogenous plasmid pUE30 from radioresistant bacterium D. radiopugnans strain ATCC19172 or a derivative thereof is used as a vector that can autonomously replicate in bacteria of the genus Deinococcus. It may be used to construct a shuttle vector that also contains a plasmid capable of autonomous replication in E. coli or a derivative thereof and which can replicate in both a bacterium of the genus Deinococcus and E. coli.

Abstract: The endogenous plasmid pUE30 from radioresistant bacterium D. radiopugnans strain ATCC19172 or a derivative thereof is used as a vector that can autonomously replicate in bacteria of the genus Deinococcus. It may be used to construct a shuttle vector that also contains a plasmid capable of autonomous replication in E. coli or a derivative thereof and which can replicate in both a bacterium of the genus Deinococcus and E. coli.

Abstract: Provided are a protein having DNA repair reaction promoting activity which consists of the amino acid sequence represented by SEQ ID NO: 1 or a modified product of that amino acid sequence, a nucleotide sequence coding for said protein having DNA repair promoting activity, a recombinant DNA having said nucleotide sequence inserted into vector DNA, a transformant containing said recombinant DNA, a process for producing a protein having DNA repair promoting activity comprising the steps of cultivating said transformant in a medium and harvesting a protein having DNA repair promoting activity from the culture, and an antibody binding to said protein.

Abstract: A cassette tape recorder with a radio receiver comprising a radio receiver system including an antenna, a tuner etc.; a tape recorder system including a magnetic head, motors etc.; an output system including variable resistors, speakers etc., which receives the audio signals from the radio receiving system or the tape recorder system; and a power source, wherein a switch is provided which is changed over by the operation of mounting a cassette on the tape recorder system and by the actuation of the temporary stopping mechanism so as to selectively connect the power source with the radio receiver system on the tape recorder system, whereby radio broadcasting can be received while the cassette is being mounted on the tape recording system.