If you have been tested for HIV infection, you may be told that the result is ‘reactive’. While this is sometimes described as a ‘positive’ result, it could be a false positive. The result indicates ...

Table 2. Distinction between atypical lymphoid proliferations rich in Reed–Sternberg-like cells (reactive immunoblasts) and classic Hodgkin lymphomas. Aspects Atypical lymphoid proliferations ...

If you want to learn about surgeries to treat breast cancer, this is a place to start. We’ll explain surgeries such as mastectomy, lumpectomy, lymph node biopsy, and lymph node removal. For most ...

Highly reactive chemicals include those that have the potential to vigorously polymerize, undergo a vigorous condensation or oxidation-reduction reaction, or become self-reactive due to shock, ...

Monocytes and macrophages are myeloid cells that have important innate immune functions. Macrophages reside in tissues and respond to infection by producing inflammatory mediators and engulfing ...

The buildup of lymph, a fluid your body makes, happens when lymph vessels or nodes that the fluid travels through are missing, damaged, or removed. There are two types of lymphedema: primary and ...

Metals react differently. Some are very reactive and others are unreactive. Observations of reactions can be used to put metals into an order of reactivity. For example, copper is unreactive so it ...

In other words, should you take a proactive or reactive approach to outsourcing? I admit this is kind of a loaded question. Rarely in life is reactive better than proactive. And certainly ...

The word displace means to push out. A more reactive element can displace a less reactive element out of its compound during a chemical reaction. Displacement reactions can be used to investigate ...

Lymphoid proliferations are traditionally thought to be either benign conditions (reactive hyperplasia and lymphadenitis) or malignant lymphomas. However, not all lymphoid lesions at present can ...

If you have been tested for HIV infection, you may be told that the result is ‘non-reactive’. This means that the test did not find any evidence of HIV infection. You can be confident that you don’t ...

Lymphedema (LIM-fuh-DEE-muh) is swelling from extra fluid. It can be very uncomfortable. It can happen when some or all the axillary (underarm) lymph nodes are removed during breast cancer treatment.