The encircling operation for the treatment of retinal detachment is a well established surgical method (Schepens, Okamura, Brockhurst, and Regan, 1960; Regan, Schepens, Okamura, Brockhusrt, and McMeel, I962; Girard and McPherson, I962; Schepens, I964; Brockhurst, I965; Schepens, I968). However, complications do occur and a number of these are related to the tightness of the encircling band. Whe...

Junctions between fiber cells of bovine lenses have been isolated in milligram quantities, without using detergents or proteases. The structure of the isolated junctions has been studied by thin-section, negative-stain, and freeze-fracture electron microscopy and by x-ray diffraction. The junctions are large and most often have an undulating surface topology as determined by thin sectioning and...

Cephaloridine is a wide-spectrum antibiotic derived from cephalosporin and, despite similarities to penicillin, it can be used in the treament of infections in penicillin-sensitive patients. Riley, Boyle, and Leopold (I968) and Records (I969) have reported the intraocular penetration of cephaloridine into the aqueous after intramuscular and intravenous administration, and Moll, Crawford, and Mc...

There has been an upsurge of interest in dynamic studies of the spinal circulation during the past ten years, with the clinical applications of selective intercostal angiography and intraosseous vertebral phlebography (Doppman, Di Chiro and Ommaya 1969 ; Houdart, Djindjian and Hurth 1969; Vogelsang 1970). In clinical practice these investigations have been used to depict mechanical obstructions...

The data reported in this paper were obtained from plants grown in nutrient solutions supplied with high or low amounts of potassium, namely 205 or 4 mg. per liter but with equal amounts of either nitrateor ammonium-nitrogen. Tops or crowns (vegetative organs produced at the apex of fruits) of uniform size from a single clone were placed in tap water for one month until they had produced about ...

Retinal dialysis is an important cause of retinal detachment and subsequent reduction of vision in the younger age groups. Dufour (I969) found that up to the age of 20 years such cases form 8 to I o per cent. of all cases of retinal detachment. Leffertstra (I 950) and Hagler and North (1968) have analysed groups of patients with dialysis and have described the clinical features of detachments c...

Historical Background Anterior lumbar interbody fusion (ALIF) was first used AQ1 in the treatment of tuberculosis and lumbar spondylolis-thesis. 1−3 Although described by Capener 4 in 1932 as the " ideal'' operation for spondylolisthesis, he further elaborated that " the technical difficulties of such procedure, however, preclude their trial.'' This statement was soon to be proven wrong by nume...

We view ourselves as scientists as very intelligent, extremely hard-working, and highly creative, though perhaps more competitive than we care to admit. But no one seems to recognize the high incidence of a serious medical problem among investigators — 'multiple personality disorder'. Of course I say this with tongue planted firmly in cheek, but it's not too far off the mark when we consider ou...