Several clinical and experimental data have implicated the failure of blood – brain barrier ( BBB ) function in triggering chronic or acute seizures, some studies implicate the interactions between a common blood protein — albumin and astrocytes.

Several clinical trials have already reported positive results using rAAV to treat Leber's Congenital Amaurosis, showing that the therapy was both safe and effective There were no serious adverse events, and patients in all three studies showed improvement in their visual function as measured by a number of methods.

Several clinical and epidemiological studies conducted in the United States and in the United Kingdom have investigated the occurrence of MCS in military personnel deployed to the Persian Gulf during the 1990s.

Several vaccine candidates are currently in various phases of research and development, including a number of ongoing clinical trials.

Several large studies in the U. K. have produced evidence that demonstrates positive clinical and cost effectiveness of manipulation in the management of lower back pain, the latest being the U. K. Back pain Exercise And Manipulation ( UK BEAM ) trial.

Several clinical and experimental data have implicated the failure of blood – brain barrier function in triggering chronic or acute seizures.

Several clinical ( physical placebos, patient-involved outcomes, falsely informing patients there was no placebo ) and methodological ( small sample size, explicit aim of studying the placebo effect ) factors were associated with higher effects of placebo.

Several vaccine candidates are in varying phases of clinical trials.

Several clinical trials have shown nighttime biofeedback to be effective at substantially reducing nighttime bruxism behavior ( though daytime biofeedback alone has not been shown to be effective at altering nighttime behavior ).

Several clinical studies indicate that supplementation with melatonin is an effective preventive treatment for migraines and cluster headaches.

Several different epidemiological studies indicate antibiotic resistance is increasing in clinical isolates.

Several clinical trials are underway and seeking to apply these methodologies to various limb girdly dystrophies.

Several producers of Chinese herbal medicines are pursuing FDA clinical trials to market their products as drugs in U. S. and European markets.

Several photosensitizers are commercially available for clinical use, such as Allumera, Photofrin, Visudyne, Levulan, Foscan, Metvix, Hexvix, Cysview, and Laserphyrin, with others in development, e. g. Antrin, Photochlor, Photosens, Photrex, Lumacan, Cevira, Visonac, BF-200 ALA. Amphinex.

Several unblinded clinical studies have suggested a benefit of balloon kyphoplasty for patients with spinal fractures.

Several different histological subtypes of rhabdomyosarcoma exist, each of which has different clinical and pathological characteristics.

Several other marine-derived agents are now in clinical trials for indications such as cancer, anti-inflammatory use and pain.

Several studies have reported clinical benefit from gFOBT testing including urology and gynecology clinics.

Several clinical trials are currently underway to investigate the role of PFO in these clinical situations.

Several studies seem to suggest that the mechanisms underlying their evolution may at least in part differ, with consequently possibly different clinical implications.

Several case reports have studied the efficacy of 3 newer antifungal agents in the treatment of disease that is refractory to first-line therapy: posaconazole and voriconazole ( triazole compounds similar in structure to fluconazole ) and caspofungin ( glucan synthesis inhibitor of the echinocandin structural class ). 66, 67 However, these drugs have not been FDA approved, and clinical trials are lacking.

Several recent clinical studies have also suggested that there is a positive correlation between creativity and bipolar disorder, although the relationship between the two is unclear.

Several milestones in medical care and research have taken place at Geisel, including the first clinical X-ray ( 1896 ), the first intensive care unit in the United States ( 1955 ), and the Brattleboro rat ( 1961 ).

Several studies have shown an increased rate of cancer mortality for workers exposed to 2, 4, 5-T.

Several studies have tried to reconstruct the phylogeny of the genus.

Several studies published since 1990 indicate that cooking meat at high temperature creates heterocyclic amines ( HCAs ), which are thought to increase cancer risk in humans.

Several brain imaging techniques, such as EEG and fMRI, have been used for physical measures of brain activity in these studies.

Several in vitro studies indicated that high concentrations of chromium ( III ) in the cell can lead to DNA damage.

Several in-depth studies of salamander genera in fossil beds in Montana show that six of seven genera were unchanged after the event.

Several of these follow-up studies, which involved viewing in group settings, reported some limited success.

Several studies have specifically addressed Duesberg's claim that recreational drug abuse or sexual promiscuity were responsible for the manifestations of AIDS.

Several other studies have also found lasting cognitive gains.

Several demographic studies, including those by social work researcher Athena Kolbe have shed light on the current status of urban residents.

Several studies have suggested that hedge funds are sufficiently diversifying to merit inclusion in investor portfolios, but this is disputed for example by Mark Kritzman who performed a mean-variance optimization calculation on an opportunity set that consisted of a stock index fund, a bond index fund, and ten hypothetical hedge funds.

Several studies have discovered that subjects who received no jury instructions comprehended the law better than subjects who received pattern instructions.

Several researchers include the island of Cyprus in Levantine studies, including the Council for British Research in the Levant, the UCLA Near Eastern Languages and Cultures department, and the UCL Institute of Archaeology, the last of which has dated the connection between Cyprus and mainland Levant to the early Iron Age.

Several regression studies with David Meiselman during the 1960s suggested the primacy of the money supply over investment and government spending in determining consumption and output.

Several studies place the nucleariids as a sister group to the fungi.

Several epidemiological studies from different countries have reported widely varying prevalence rates for chronic pain, ranging from 12-80 % of the population.

Several detailed studies using various methods to measure growth curves among known specimens have demonstrated that there is actually only one valid Pterodactylus species, P. antiquus.

Several studies ( Alfredo Torero or Rodolfo Cerrón Palomino ) show that the oldest form of Quechua appeared in Cajamarquilla, Lima.

Several police organizations condemned this study and suggested more studies like this would make them hesitant to pull over visible minorities.

Several sources claim that during his studies he was more interested in religion than joining the military.

Several neuroimaging studies have emerged in order to identify areas associated with stuttering.

Several studies show that between 50 % and 73 % of women who have used this type of condoms during intercourse find them as or more comfortable than male condoms.

Several official design studies were done, but most were basically smaller versions of the existing Shuttle concept.