Etiopathogenesis of Plummer-Vinson syndrome is unknown. Abstract Full text PDF 233KB.PlummerVinson syndrome PVS, also called PatersonBrownKelly syndrome or sideropenic dysphagia, is a rare disease characterized by difficulty in. Plummer-Vinson syndrome is characterized by cervical dysphagia, iron deficiency anemia, and upper esophageal web or webs. While this.PO Box 2345, Beijing 100023, China....

Three species of wild cats (felids) occur in the temperate forests of North America: the cougar (Fells concolor), bobcat (Lynx rufus), and lynx (Lynx canadensis). The cougar is found in both temperate and tropical forests from the mountains of southern British Columbia to the southern tip of South America, whereas the bobcat and lynx are restricted to the temperate zone of North America. Bobcat...

D O S E fractionation, centrifugation, or metabolic inhibition studies of X-ray induced dominant lethality (PARKER 1959) or detachment of attached-X chromosomes (PARKER 1959; PARKER and HAMMOND 1958) in Stage 7 and Stage 14 primary oocytes (KING, RUBINSON, and SMITH 1956) of Drosophila melanogaster have demonstrated that a significant amount of the X-radiation damage can be repaired within 15 m...

One con repair’. *Autho Stem Cell Section, Laboratory of Neurosciences, National Institute on Aging, NIH, 333 Cassell Drive, Room 406A, Baltimore, MD 21224, USA Children’s Research Center of Michigan, The Carman and Ann Adams Department of Pediatrics, Wayne State University School of Medicine, Children’s Hospital of Michigan, Detroit, MI 48201, USA Corporate Research Laboratories, Invitrogen Co...

The purpose of this paper is to study the Parker vectors (in fact, sequences) of several known classes of oligomorphic groups. The Parker sequence of a group G is the sequence that counts the number of G-orbits on cycles appearing in elements of G. This work was inspired by Cameron’s paper on the sequences realized by counting orbits on k-sets and k-tuples.

On my voyage home from Calcutta last March, Mr. J. F. Parker, of .Messrs. Thacker, Spink & Co., of Calcutta, and Mrs. Parker, who were travelling in the same vessel with me, volunteered the following statement regarding an outbreak of fever. I cannot answer for the facts, because I was not aware of the case at the time it occurred, and because a letter which I addressed to Calcutta on the subje...

ORK on recessive lethal mutation in Drosophila sperm has suggested ways win which chromosome breakage may be related to recessive lethal mutation, through position effect, deficiency, and as a direct result of breakage. The increase in aged oocytes of radiation-induced dominant lethals (PARKER 1959) and of rearrangement, the slower rejoining of breaks (PARKER and HAMMOND 1958) , and the higher ...

In this paper we compare the numerical properties of the well-known fast O(n 2) Traub and Bjj orck-Pereyra algorithms, which both use the special structure of a Vandermonde matrix to rapidly compute the entries of its inverse. The results of numerical experiments suggest that the Parker variant of what we shall call the Parker-Traub algorithm allows one not only fast O(n 2) inversion of a Vande...

1928),3 to the reversal of the ciliary stroke on the lips of Metridium. In consequence of the relative abundance of glycogen in the meat of mussels such a response might have been anticipated. No reversal was obtained from ordinary starch or from glucose when these substances were applied to the lips of the sea-anemone as the glycogen was. I concdude that glycogen may be added to the short list...