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 disruptive change has penetrated to the third level of social order, the process of disruption rapidly reaches a point of no return.

When this water level has been reached, inject steam into the wheel until the temperature reaches that shown in Column B of Table 2.

When gastric hydrochloric acid reaches the nerves in the gastrointestinal mucosa, they signal pain to the central nervous system.

Neurons generate electrical signals that travel along their axon s. When a pulse of electricity reaches a junction called a synapse, it causes a neurotransmitter chemical to be released, which binds to receptors on other cells and thereby alters their electrical activity.

When the child reaches skeletal maturity ( 18 to 25 years of age ), all of the cartilage is replaced by bone, fusing the diaphysis and both epiphyses together ( epiphyseal closure ).

When the total vapor pressure reaches the pressure surrounding the liquid, boiling occurs and liquid turns to gas throughout the bulk of the liquid.

When the process of escape and return reaches an equilibrium, the vapor is said to be " saturated ," and no further change in either vapor pressure and density or liquid temperature will occur.

) When the orthodromic stimulus reaches the muscle fiber, it elicits a strong M-response indicative of muscle contraction.

When the antidromic stimulus reaches the motor neuron cell bodies, a small portion of the motor neurons backfire and orthodromic wave travels back down the nerve towards the muscle.

When a particular substance, whether chemical or biotic — reaches unsafe levels in the bloodstream, the body can effectively dilute — or at least maintain equilibrium of — the offending substances by storing it in new fat tissue.

When a pilot moves the control column ( or sidestick ), a signal is sent to a computer ( analogous to moving a game controller ) the signal is sent through multiple wires ( channels ) to ensure that the signal reaches the computer.

When the actuator reaches the desired position, the two signals ( incoming and outgoing ) cancel each other out and the actuator stops moving ( completing a feedback loop ).

When he finally reaches the cables, Andoh tries to stop him from releasing them.

A Power stroke: When the piston reaches a point just before top dead center, the spark plug ignites the fuel mixture.

When it reaches the towns of Saugatuck and Douglas it stops and enters Lake Michigan.

When this news of his family ’ s execution reaches him, Macduff is stricken with grief and vows revenge.

When the voltage of C1 right-hand plate ( Q2 base voltage ) becomes positive and reaches 0. 6 V, Q2 base-emitter junction begins diverting a part of R2 charging current.

When the water reaches the coastline, the corresponding coastal ponds, both freshwater and brackish, fill to capacity and beyond, spilling over into the sea.

When the timer reaches 0: 00, the blinds go to a higher level.

When the air reaches a high altitude, where the temperature is low, water vapor condenses into clouds, which rain onto the Earth's surface, completing the water cycle.

When a neurotransmitter is released at a synapse, it reaches its highest concentration inside the narrow space of the synaptic cleft, but some of it is certain to diffuse away before being reabsorbed or broken down.

When the game score reaches three points each, the receiver chooses which side of the court ( advantage court or deuce court ) the service is to be delivered on the seventh and game-deciding point.

When the incident angle is increased sufficiently, the transmitted angle ( in air ) reaches 90 degrees.

# When a pair reaches 5 points in the final game, the pairs must switch ends of the table and the team that receives the service must switch receiver.

When the bus reaches its destination, the passengers on the bus — including the narrator — are gradually revealed to be ghosts.

When the station wagon drew abreast of the dusty dirt road that led up to the porch of the Culver house, Pamela turned the wheel, guiding the car to its familiar parking spot close to the house, and stopped.

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, in my enthusiasm, I proposed the party, my city editor ( who disliked the club and many of its members ) tried to block my participation in the gala event.

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 founded by Franklin the Gazette was a weekly family newspaper and under its new name its format remained that of a newspaper but its columns gradually contained more and more fiction, poetry, and literary essays.

When the Brown & Sharpe Manufacturing Company reached its 125th year as a going industrial concern during 1958, it became an almost unique institution in the mechanical world.

When the automobile was in its embryonic stage, such roads as existed were pretty much open roads with the tacit understanding that horses should not be unduly terrified being about the only rule governing where, when and how fast a car could go.

When air travel was in its infancy, the sky was considered big enough and high enough for all.

When that was broken up after the First World War, its name was changed once more.

`` When working from one of my sketches I square it up and project its linear form freehand to the watercolor sheet with charcoal.

When radio came in, it continued the misplaced modifier in its routines as a standard device.

When each number of successes X is paired with its probability of occurrence Af, the set of pairs Af, is a probability function called a binomial distribution.

When we come upon the rabbit and make our remark about its suffering being a bad thing, we presumably make it with some feeling ; ;

When a plan burst its seams, hasty conferences supply the necessary patch, and life goes merrily on.

When in 1816 an act of Congress forced the foreign firm out of the United States, its British-born employees, now become American citizens -- Joseph Rolette, Joseph Renville and Alexis Bailly -- continued in the fur business.

When the writer uses material does he tamper with it to improve its commercial effect or does he leave it pure??

When stacking wine on its side in a bin, care should always be taken to be sure there is no air bubble left next to the cork.

When her brother Winslow became a student at Brown University in 1874, she wrote him about a course in history he was taking under Professor Diman: `` What is Prof. Diman's definition of civilization, and take the world through, is its progress ever onward, or does it retrograde at times??

`` When and if it can do so without jeopardizing constitutional and statutory tax-exemption privileges essential to the maintenance of its educational program and facilities, Emory University will consider applications of persons desiring to study or work at the University without regard to race, color or creed, continuing university policy that all applications shall be considered on the basis of intellectual and moral standards and other criteria designed to assure the orderly and effective conduct of the university and the fulfillment of its mission as an institution of Christian higher education ''.

When the Congo received its independence in 1960 there were, among its 13.5 million people, exactly 14 university graduates.

When, therefore, it turned its attention to the concrete entities with which popular imagination had peopled the world of spirit, these entities soon lost whatever status they had enjoyed as actual elements of external reality.