What does null cell mean?
Answer. The NULL call group means that the call is not assigned to an agent group. This can happen for a number of reasons: For inbound calls: If a customer calls your line, but hangs up in the IVR or before the call is assigned to a group, that call has a NULL call group value.
Why natural killer cells are called null cells?
NK cells are part of a group of lymphocytes called null cells. Unlike other lymphocytes, such as T and B cells, they do not have to find their specific match to identify an invader. They are ‘null’ of both specificity and memory, allowing them the freedom to react to any tumor cell or cell infected with a virus.
What does NULL mean in medical terms?
Completely absent
Completely absent; a set with no members or of zero magnitude.
What is null cell leukemia?
MalaCards based summary : Null-Cell Leukemia, also known as null cell acute lymphoblastic leukemia, is related to leukemia, acute lymphoblastic and cerebral meningioma.
What does NULL mean in text message?
no signal
Null usually means “no signal” but don’t know in your case as you do not say if you are only getting the notification…and still getting the message?…or not getting the message?…or if it is happening to just one contact?…
What does NULL mean slang?
Null means having no value; in other words null is zero, like if you put so little sugar in your coffee that it’s practically null. Null also means invalid, or having no binding force. From the Latin nullus, meaning “not any,” poor, powerless null is not actually there at all.
What is the function of null cells?
They are rapidly stimulated in the presence of pathogens like viruses and attack viral-infected or tumor cells in a non MHC-restricted manner. Null cells make up a small proportion of the lymphocytes that can be found in an organism.
What are natural killer cells?
Listen to pronunciation. (NA-chuh-rul KIH-ler sel) A type of immune cell that has granules (small particles) with enzymes that can kill tumor cells or cells infected with a virus. A natural killer cell is a type of white blood cell.
What does null lab work mean?
In science, a null result is a result without the expected content: that is, the proposed result is absent. It is an experimental outcome which does not show an otherwise expected effect. This does not imply a result of zero or nothing, simply a result that does not support the hypothesis.
How do you define a null in Excel?
Null is a type of error which occurs in excel when the two or more cell references provided in a formulas are incorrect or the position they have been placed is incorrect, if we use space in formulas between two cell references we will encounter null error, there are two reasons to encounter this error one is if we …
What is NULL used for?
A NULL value is a special marker used in SQL to indicate that a data value does not exist in the database. In other words, it is just a placeholder to denote values that are missing or that we do not know. NULL can be confusing and cumbersome at first.
What is the purpose of NULL?
Null or NULL is a special marker used in Structured Query Language to indicate that a data value does not exist in the database. Introduced by the creator of the relational database model, E. F.
What is the medical definition of a null cell?
Medical Definition of null cell. : a lymphocyte in the blood that does not have on its surface the receptors typical of either mature B cells or T cells.
How is a null cell a natural killer cell?
Null cells represent a small proportion of the lymphocyte population. Stimulated by the presence of an antibody, null cells can attack certain cellular targets directly. They kill tumor or viral-infected cells, although not with the specificity of cytotoxic T cells. A null cell is a type of natural killer cell.
Which is an example of a null hypothesis?
called also null lymphocyte; see null cell. a statistical hypothesis which states that one variable has no association with another variable, or set of variables. That is, the observed results can be explained by chance alone.