When health conditions warrant, immune system organs including the thymus, spleen, portions of bone marrow, lymph nodes and secondary lymphatic tissues can be surgically excised for examination while patients are still alive.

When the thoracic duct-venous communication is blocked, however, the resultant raised intralymphatic pressure will usually cause other normal non-functioning communications to open and thereby allow the return of lymph to the blood stream.

When a B-cell in the lymph node recognizes the same unprocessed surface antigen on the bacterium with its surface bound antibody, the antigen is endocytosed and processed.

When the prions are absorbed through the intestines, they first appear in the lymph nodes, especially in Peyer's patches at the small intestine.

When the thoracic duct is blocked or damaged a large amount of lymph can quickly accumulate in the pleural cavity, this situation is called chylothorax.

When a lymph node detects a possible threat passing into it in the lymph ( such as a bacterium ), it swells up.

When a paraaortic lymph node dissection or sampling is done as a part of the treatment of cancer, the lateral aortic lymph node group is the most important group.

When a lumpectomy is performed for DCIS, lymph node biopsy and radiation therapy may be performed.

When metastasis does occur, it is usually to the liver, spleen, lymph nodes and bone marrow.

When the head of the operating room table is lower than the heart, fluid accumulates in tissues of the head because venous return and lymph drainage are decreased.

When an infection is present, the lymph nodes swell, produce more white blood cells, and attempt to trap the organisms that are causing the infection.

When cancer has not spread to the locoregional lymph nodes ( stage II, Dukes B ) the benefit of chemotherapy is marginal and the decision on whether to give adjuvant chemotherapy should be carefully evaluated by discussing with the patient the realistic benefits and the possible toxic side effects of treatment.

When a key is requested, first the node checks the local data store.

When the user wants to do a search, the client sends the request to each actively connected node.

When a node first starts, it only knows of its immediate neighbours, and the direct cost involved in reaching them.

When applying link-state algorithms, each node uses as its fundamental data a map of the network in the form of a graph.

When applied to a bus-based network, this central hub rebroadcasts all transmissions received from any peripheral node to all peripheral nodes on the network, sometimes including the originating node.

When a node x is accessed, a splay operation is performed on x to move it to the root.

When a subtree is rotated, the subtree side upon which it is rotated decreases its height by one node while the other subtree increases its height.

When a node wanted to transmit data, it would raise a bit on its hub port connection that indicating to the hub that it was ready.

When combined with Near Vertical Incidence Skywave ( NVIS ) techniques and sufficient channels spread across the spectrum, an ALE node can provide greater than 95 % success linking on the first call, on a near-par with SATCOM systems.

When a station or device or node wants to send some information, it uses the following algorithm:

When a node sends a message, the message is processed by each computer in the ring.

When the physical star topology is applied to a logical bus network such as Ethernet, this central node ( traditionally a hub ) rebroadcasts all transmissions received from any peripheral node to all peripheral nodes on the network, sometimes including the originating node.

# When we are done considering all of the neighbors of the current node, mark the current node as visited and remove it from the unvisited set.

When back-face culling is used, each node therefore contains a convex set of polygons, whereas when rendering double-sided polygons, each node of the BSP tree contains only polygons in a single plane.

When administered intravenously, adenosine causes transient heart block in the Atrioventricular ( AV ) node.

When a link-state advertisement is received at a node, the node looks up the sequence number it has stored for the source of that link-state message.

When a node is moved from the candidate list into the tree, it is removed from the candidate list and is not considered in subsequent iterations of the algorithm.

When a fact or combination of facts causes all of the patterns for a given rule to be satisfied, a leaf node is reached and the corresponding rule is triggered.

When I went for my interview with the director I saw why.

When she appeared at the store to help out for a few hours even my looking at her was surreptitious lest my Uncle notice it.

When we opened the door again for business and switched on the lights she said:

When she would do these things, he would turn blind for an instant and become sick at his stomach.

When I mentioned that for my first long voyage I did not even have the money for the return fare, but had trusted to luck that I would earn a sufficient amount, the young people looked at me doubtingly.

When it comes to this, I shall prefer emigrating to some country where they make no pretence of loving liberty -- to Russia, for instance, where despotism can be taken pure, without the base alloy of hypocrisy '' ( His emphasis )

When Heidegger and Sartre speak of a contrast between being and existence, they may be right, I don't know, but their language is too philosophical for me.

When these had been pocketed, we could still spend a morning cracking open other pebbles for our delight in seeing how much prettier they were inside than their dull exteriors indicated.

When I try to work out my reasons for feeling that this passage is of critical significance, I come up with the following ideas, which I shall express very briefly here and revert to in a later essay.

When words can be used in a more fresh and primitive way so that they strike with the force of sights and sounds, when tones of sound and colors of paint and the carven shape all strike the sensibilities with an undeniable force of data in and of themselves, compelling the observer into an attitude of attention, all this imitates the way experience itself in its deepest character strikes upon the door of consciousness and clamors for entrance.

When Peter B. Kyne ( Pride Of Palomar, 43 ) informed us in 1921 that we had an instinctive dislike for the Japanese, did the heated debates of the Californians settle the truth or falsity of the proposition??

When some question arises in the medical field concerning cancer, for instance, we do not turn to free and open discussion as in a political campaign.

When he remembered that he might have not signed the check, Mercer made out another for the same amount, instructing the bank to destroy the other -- especially if he had happened to have absent-mindedly signed both of them.

When the family business failed, Mercer left school and on his mother's urging -- for she hoped that he would become an actor -- he joined a local little theater group.

When he heard that Paul Whiteman was looking for singers to replace the Rhythm Boys, Mercer applied and got the job, `` not for my voice, I'm sure, but because I could write songs and material generally ''.

Besides doing a single song, `` When The Sun Comes Out '', they worked on the ambitious American-Negro Suite, for voices and piano, as well as songs for films.

When we consider the disorganized state of the world community, and the legacy of predispositions adversely directed against all who are identified as Jews, it is obvious that the struggle for the minds and muscles of men needs to be prosecuted with increasing vigor and skill.

When McPherson pushed blindly through Snake Creek Gap in a potentially decisive movement, the only cavalry in his van was the Ninth Illinois Mounted Infantry, totally inadequate for its role.

When they were first written, there was evidently no thought of their being published, and those which refer to the writer's love for Mrs. Meynell particularly have the ring of truth.

When a lady chanced to soil a pair of evening slippers, Brigadier Bauer was dispatched to Paris for replacements.

When we went for our walks Lilly's brother would come along every once in a while.

When the United States entered the First World War Baker made certain that the Draft Act of 1917 prohibited the sale of liquor to men in uniform and that it provided for broad zones around the camps in which prostitution was outlawed.