Abstract: A taste presentation device may have a first electrode and a second electrode provided to allow an electric circuit to be formed between a food or drink to be taken by a user and a body of the user, and an electric stimulus generation unit that supplies a current for generating an electric stimulation between the first electrode and the second electrode, the electric stimulus generation unit includes a noise reduction unit that reduces a noise component in the current.

Abstract: This invention relates to a specimen-extracting solution containing a component capable of strongly suppressing false negatives, which could not be suppressed by conventional techniques, a method for extracting specimens, and a test reagent using such specimen-extracting solution and such method, when detecting virus, bacteria, target protein, or other antigens from specimens derived from body fluids, such as nasal swab specimens, nasal aspirate specimens, nasal wash specimens, nasal secretion specimens collected by nose blowing, pharyngeal swab specimens, saliva specimens, fecal specimens, serum specimens, plasma specimens, and urine specimens, with the use of a detection reagent utilizing the antigen-antibody reactions or the reactions between substances interactive with each other.

Abstract: This invention relates to a specimen-extracting solution containing a component capable of strongly suppressing false positives, which could not be suppressed by conventional techniques, a method for extracting specimens, and a test reagent using such specimen-extracting solution and such method, when detecting virus, bacteria, target protein, or other antigens from specimens derived from body fluids, such as nasal swab specimens, nasal aspirate specimens, nasal wash specimens, nasal secretion specimens collected by nose blowing, pharyngeal swab specimens, saliva specimens, fecal specimens, serum specimens, plasma specimens, and urine specimens, with the use of a detection reagent utilizing the antigen-antibody reactions or the reactions between substances interactive with each other.

Abstract: A reusable best-by date indicator incudes a main body, which is made of a transparent material, having a plurality of storages, the main body having a first air vent at one end through which outside air can be drawn in and a second air vents between the storages; a plurality of silica gels, each of which is stored in the storages, respectively, the gels changing their color depending on the degree of moisture absorption; a slidable cover that is placed near the first air vent of the body and can exposes the first air vent by slide; and a double-sided tape attached bonded to the back surface of the body.