Since E. histolytica does not form cysts in the absence of bacteria, E. invadens has become used as a model for encystation studies as it will form cysts under axenic growth conditions, which simplifies analysis.

Since E. histolytica does not form cysts in vitro in the absence of bacteria, it is not possible to study the differentiation process in detail in that species.

Since part of this re-radiation is back towards the surface and the lower atmosphere, it results in an elevation of the average surface temperature above what it would be in the absence of the gases.

Author Peter Lehman would later observe that his absence was a part of the mystery of his persona: " Since it was never clear where he had come from, no one seemed to pay much mind to where he had gone ; he was just gone.

Since probes revealed the absence of any indications of intelligent life on Mars, the science fictional Mars has changed to a possible future home for the human race, e. g. through terraforming.

Since the foundation of the state Dáil business had been relatively calm as the relatively small Labour party functioned as the official opposition in the absence of die-hard Republicans.

Since Mrs. Voorhees, the killer in the original Friday the 13th, appears onscreen only during the final scenes of the film, Manfredini had the job of creating a score that would represent the killer in her absence.

Since monopole antennas rely on a conductive ground, a so-called grounding structure may be employed to provide a better ground contact to the earth or which itself acts as a ground plane to perform that function regardless of ( or in absence of ) an actual contact with the earth.

Since then, the Union Flag has been flown in the Queen's absence.

Since there were no further instructions required to be given by the defendant to his own counsel, the judge ruled that the trial would proceed in the defendant's absence, and after summing up, he sent the jury to deliberate.

Since he had had a history of leaving for days at a time with little or no notice to his friends and family, and often kept to himself, his absence seemed unremarkable at first.

Since the area has high annual rainfall and mild coastal climate there is a lush rainforest covering the foothills-this forest is nationally significant for the total absence of beech trees ( genus Nothofagus ).

Since radulae are very rarely preserved in fossil molluscs, its absence does not necessarily mean that K. quadrata did not have one.

Since these two sidebands are fully out of phase with each other, the two beat signals cancel in the absence of absorbers.

Since Doralee is able to forge Hart's signature without difficulty, the three women use the occasion of their boss ' absence to effect numerous changes around the office, in his name.

Since the absence of any candidate would leave the impression that the preference of the group of voters as a whole is a clear majority when by definition it is not when we consider the third candidate, one can argue that none of these candidates are actually " irrelevant.

Since the early 1980s, the combination of a public opinion apparently biased against war, a less interventionist US foreign policy, and a relative absence of American wars and military ' Vietnam paralysis '.

Since his release, he has resumed making films after a 30 year absence.

Since the absence of meiotic processes is not proven, the exact definition remains doubtful.

Since South Africa's return to the Olympic Games in 1992 after a four-decades long absence resulting from a ban imposed by the International Olympic Committee ( IOC ) for the country's Apartheid policies, it has seen mixed success ; achieving three gold medals, a silver and a bronze at the 1996 Summer Olympics in Atlanta but only managing two silver medals and three bronze medals at the 2000 Summer Olympics in Sydney.

Since the part-time sheriff-depute was not compelled to reside within his sheriffdom and could carry on his practice were as advocate, it became common for a depute to appoint a sheriff-substitute who acted in his absence.

Since Lycidas, like King, drowned, there is no body to be found, and the absence of the corpse is of great concern to the swain.

Since both of the insects released are natural competitors of diffuse knapweed, and since this and other similar efforts at biocontrol have been successful, there is significant evidence that diffuse knapweed benefits from the absence of its natural enemies.

Since Rubens was exempt from registering pupils, the absence of Jamesone's name does not mean that the painter definitely did not study there.

Since then, and since the pure grain had gotten him divorced from every decent -- and even indecent -- group from Greenwich Village to the Embarcadero, he had become a sucker-rolling freight-jumper.

Since it is not far from Viareggio, he will visit Puccini's house, as he never fails to do, to pay his respects to the memory of the composer of La Boheme, which he considers one of Puccini's masterpieces.

Since the great flood of these dystopias has appeared only in the last twelve years, it seems fairly reasonable to assume that the chief impetus was the 1949 publication of Nineteen Eighty-Four, an assumption which is supported by the frequent echoes of such details as Room 101, along with education by conditioning from Brave New World, a book to which science-fiction writers may well have returned with new interest after reading the more powerful Orwell dystopia.

Those famous lines of the Greek Anthology with which a fading beauty dedicates her mirror at the shrine of a goddess reveal a wise attitude: `` Venus, take my votive glass, Since I am not what I was, What from this day I shall be, Venus, let me never see ''.

Since moving from a Chicago suburb to Southern California a few months ago, I've been introduced to a new game called Lanesmanship.

Since the Connally amendment has the effect of giving the same right to the other party to a dispute with the United States, it also prevents us from using the court effectively.

Since the provision of skywave service requires adequate freedom from interference, only class 1, stations are capable of rendering skywave service.

Says NRLDA's James Wright: `` Since 1958 carriers that move material from the yard to the job site have undergone more radical changes than any of the dealer's other equipment ''.

Since Af is ferromagnetic, we felt that any results obtained from the magnetically contaminated Af would be suspect.

Since there is a continual loss of micrometeoritic material in space because of the radiation effects, there must be a continual replenishment: otherwise, micrometeorites would have disappeared from interplanetary space.

Since a Skeletal Age rating can be made at any age during growth, from Elbow, Shoulder, Knee, or Foot as well as Hand, it seems to be the method of choice when one wishes to study most aspects of skeletal developmental progress during childhood.

Since the circulating thyroid hormones are the amino acids thyroxine and tri-iodothyronine ( cf. Section C ), it is clear that some mechanism must exist in the thyroid gland for their release from proteins before secretion.

Since emotional reactions in the higher vertebrates depend on individual experience and are aroused in man, in addition, by complex symbols, one would expect that the hypothalamus could be excited from the cortex.

Since the complex of singular lines is of order K and since there is no complex of invariant lines, it follows from the formula Af that the order of the involution is Af.

A final class of exceptional lines is identifiable from the following considerations: Since no two generators of Af can intersect, it follows that their image curves can have no free intersections.

Since that time the telegraph office has shifted in location from the railroad station at the Depot and shops at the Center back to the town clerk's office and drugstore at the Village.

Since none of these glimpses of poetizing without writing is intended to incorporate a signature into the epic matter, there is prima-facie evidence that Beowulf and the Homeric poems each derive from an oral tradition.

Since experience indicates that effluents from oxidation ponds do not create major problems at these BOD concentrations, the goal for the effluent quality of the accelerated treatment system was the same as from conventional oxidation ponds.

Since Biblical times, rosaries have been made from jobs-tears -- the seeds of an Asiatic grass.

Since Election Day, Vice President Richard Nixon had virtually retired -- by his own wish -- from public view.

Since the Protestant clergy for the most part wear gray or some variant from the wholly black suit, my Roman collar and black garb usually identify me in England as a Roman Catholic cleric.

Since the Catholic Church expresses such desire that the Sacred Scriptures be read, the following taken from the Holy Bible ( New Catholic Edition ) will prove a means of grace and a source of great spiritual blessing.

Since the hero, a sterling and upright fellow, is a rich Brown senior, while two Yalies are cast as virtual rapists, I suppose I should disqualify myself from sitting in judgment on `` Where The Boys Are '', but I shall do nothing of the sort.