BACKGROUND The standard assay for the clinical detection of contact allergy against nickel is the patch test. For research purposes, the in vitro lymphocyte transformation test (LTT) is mostly applied. However, the in vivo application of allergens includes the potential of sensitization, whereas the LTT demands 6 days of cell culture and radioactive labelling procedures. OBJECTIVE The purpose...

BACKGROUND The patch test is considered to be the gold standard for diagnosing nickel (Ni) allergy. The lymphocyte transformation test (LTT) can also be used to detect Ni sensitization. However, little is known about the correlation between patch test and LTT reactions to Ni. OBJECTIVE To establish and validate an LTT for Ni sensitization by comparison with patch test reaction and history. ...

Background / Objective Prior use of “lymphocyte transformation test” (LTT) suggested that it was less often positive in Stevens-Johnson syndrome (SJS), Toxic Epidermal Necrolysis (TEN), than in other cutaneous reactions, with possible dependence on sampling date. We explored the possible role of inhibitory co-receptors in LTT, using well-defined groups of patients who reacted to carbamazepine (...

Lufthansa Technical Training GmbH (LTT) runs training courses for Lufthansa Technik AG and for several other international airlines. It offers about 670 types of courses of which several hundred take place each year. The course-scheduling problem LTT faces is to develop a schedule for the year that maximizes its profit while meeting complex precedence, temporal , and resource-related constraint...

AIM A pilot study of the feasibility of using dye laser thermotherapy (LTT) at a subcoagulation temperature to occlude newly formed vessels in patients with age related macular degeneration (AMD). METHODS Choroidal neovascularisation (CNV) in 24 eyes with exudative AMD was treated with a continuous wave yellow laser at 578 nm. Parameters were an exposure time of 2 or 5 seconds, a spot size of...

The Drosophila embryonic central nervous system (CNS) develops from a stereotyped pattern of neuronal progenitor cells called neuroblasts (NB). Each NB has a unique identity that is defined by the time and position of its formation and a characteristic combination of genes it expresses. Each NB generates a specific lineage of neurons and/or glia. Here we describe the genetic and phenotypic anal...

Rett syndrome (RS) is a childhood neurodevelopmental disorder characterized by a primary disturbance in neuronal development. Neurological abnormalities in RS are reflected in several behavioral and cognitive impairments such as stereotypies, loss of speech and hand skills, gait apraxia, irregular breathing with hyperventilation while awake, and frequent seizures. Cognitive training can enhance...

mtt assay is designed for spectrophotometric quantification of cell growth and viability without using the radiactive isotopes. the aim of this study is com¬parison of ltt and mtt as sensitive poliferation assays in immunodeficient pa¬tients. 20 immunodeficient and 20 healthy subjects were selected in this study. all of them had normal lymphocytes count, normal cd3 and negative dth reac¬tion to...

New phosphors with various emission colors for RE3+ doped Li1+xTa1-xTixO₃ (LTT) (RE: Eu, Sm, Er, Tm, and Dy) were synthesized by electric furnace at 1423 K for 15 h. The microstructure of the host material and the photoluminescence (PL) property were determined and compared to those of RE3+ doped Li1+xNb1-xTixO₃ (LNT). In the LTT phosphor, the highest PL intensity was achieved for the mixture c...

Objective: The aim of this study was to discuss the indications and efficacy of percutaneous endoscopic gastrostomy (PEG)/percutaneous radiologic gastrojejunostomy (PRGJ). Methods: A total of 104 PEG/PRGJ patients were divided into nervous system disease, digestive system tumor, non-digestive system tumor with eating difficulties, and other type of disease groups. We recorded the longest retain...