How is it used? The chromogranin A (CgA) test is used as a tumor marker. It may be ordered in combination with a 5-HIAA test to help diagnose carcinoid tumors. It may also be used to detect the presence of other tumors arising from neuroendocrine cells.
Google Authenticator is an application that implements two-step verification services using the Time-based One-time Password Algorithm (TOTP) and HMAC-based One-time Password Algorithm (HOTP), for authenticating users of mobile applications by Google. The service implements algorithms specified in RFC 6238 and RFC 4226. Authenticator provides a six- to eight-digit one-time password which users must provide in addition to their username and password to log in to Google services or other sites. The Authenticator can also generate codes for third-party applications, such as password managers or file hosting services.
Google (ticker symbol: GOOG) is an American multinational leader in technology that aims to organize the world's information and make it universally accessible and useful. Founded by Larry Page and Sergey Brin, who were attending Stanford University at the time, Google was first incorporated as a privately held company on September 4, 1998. From the outset, Google's core product has been its internet search engine, which remains the most popular such service across the globe. The company boasts one of the largest research groups in the world tasked with solving search problems and improving the process of accessing information.