![]() The user enters the same username and password whether authenticating on-premises or in the cloud.įind out more about pass-through authentication on our Azure AD Connect Masterclass. The PTA user experience is of the same sign-on (and sometimes single sign-on – see SSSO) when using AD and Azure AD. It also has the advantage that any on-premises polices, such as working hours restrictions, can be evaluated during authentication to cloud services. This service can be used when on-premises validation is required, for example when a policy, regulation or law doesn’t allow synchronization of password hashes, which is Microsoft’s favoured approach when using Azure AD Connect. The agent connects outbound to Azure AD and listens for authentication requests, so it only requires outbound ports to be open. The password need not be present in Azure AD (in any form). It involves a simple service in the form of an agent running on one or several on-premises domain-joined servers, which validates a user’s sign-on on behalf of Azure AD directly with the on-premises Active Directory (AD). The extra treatments might increase the chance of curing the cancer.Pass-through authentication (PTA) is a feature of Azure AD Connect. You might have extra treatment if doctors suspect there are micrometastases. This information is important in treating cancer. whether lymph nodes removed during an operation contained cancer cells – if the lymph nodes contained cancer cells this shows that cancer cells have broken away from the original cancer (but there is no way of knowing whether the cells have spread to any other areas of the body).the grade of the cancer (how abnormal the cells are) – the higher the grade, the more quickly the cancer grows and the more likely for cells to spread.whether there are cancer cells in the blood vessels in the tumour removed during surgery – if cancer cells are found then the cancer is more likely to have spread to other parts of the body.previous experience – doctors collect and publish this information to help each other.Doctors base this on a number of factors: But for most cancers, there is no blood test that can say whether a cancer has spread or not.įor most cancers, doctors can only say whether it is likely or not that a cancer has spread. These are sometimes called tumour markers. These may show that there are metastases in the body that are too small to show up on a scan. They are too small to show up on any type of scan.įor a few types of cancer, blood tests can detect certain proteins that the cancer cells release. Micrometastases are areas of cancer spread (metastases) that are too small to see. This 2 minute video is about the lymphatic system. But some may survive and grow to form tumours in one or more lymph nodes. In the lymph glands, the cancer cells might die. It also traps damaged or harmful cells such as cancer cells.Ĭancer cells can go into the small lymph vessels close to the primary tumour and travel into nearby lymph glands. The lymphatic system is a network of tubes and glands in the body that filters body fluid and fights infection. Platelets are blood cells that help the blood to clot. This could also help the cancer cells to move into the surrounding tissues. The white blood cells in our immune system find and kill some cancer cells. Others cancer cells might die because they get battered around by the fast flowing blood.Ĭancer cells in the circulation may try to stick to platelets to form clumps to give themselves some protection. Of the many thousands of cancer cells that reach the bloodstream, only a few survive to form a secondary cancer. This is quite a complicated process and most cancer cells don't survive it.
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