摘要:
There is an increasing interest in human platelet extracts rich in growth factors (PGF) both for wound healing and for stem cell expansion. The present invention concerns a virally-inactivated growth factors-containing platelet lysate depleted of PDGF and VEGF, which is preferably enriched in TGF, IGF and EGF-rich. The present invention further concerns a method for obtaining such a platelet lysate, comprising the steps of contacting a starting platelet concentrate with a solvent and/or a detergent, incubating said starting platelet concentrate with the solvent and/or detergent for a period of at least 5 minutes to 6 hours, at a pH maintained in a range from about 6.0 to about 9.0, and at a temperature within the range of from 2°C to 50°C, optionally removing the solvent and/or the detergent by oil extraction and obtaining an aqueous protein phase; and incubating the solvent and/or detergent-tretaed platelet concentrate or the aqueous protein phase with charcoal.
摘要:
A radiographic film reading device is used in clinic dental diagnosis and treatment. The radiographic film reading device includes a film holder, a main body, a substrate and a backlight module. The film holder supports a radiographic film thereon. The main body has a receptacle for accommodating the film holder therein. The substrate is disposed inside the main body and has an optical sensor. The backlight module is disposed inside the main body for emitting a light beam from bottom to top. The light beam penetrates through the radiographic film and is then imaged onto the optical sensor of the substrate, so that the image of the radiographic film is processed into a digital form.