Intrathoracic meningocele is rare and is usually associated with neurofibromatosis type I. Most of the reported thoracic meningoceles are not strictly anterior in location, but also lateral or anterolateral. We report a case of true anterior thoracic meningocele with no associated generalized mesenchymal dysplasia.

We analyze second-order M1-M1 and M1-E2 effects on the hyperfine structure HFS of the lowest-energy P states of alkali-metal atoms arising from the coupling of the two J=1 /2,3 /2 fine-structure levels through the hyperfine interaction. We find these effects to be especially sizable in Li, leading to a 9 correction to the most accurate reported experimental value of the A P1/2 HFS constant of L...

The effects of glucose in artificial spring water (ASW) on the survival, infectivity, and linear movement of Echinostoma caproni cercariae were studied. Cercariae maintained at 23 degrees C in 1% glucose in ASW (ASWG) or ASW alone, reached 50% survival at 26 and 23 h, respectively. All cercariae in ASWG and ASW were dead by 50 and 32 h, respectively. Infectivity to juvenile Helisoma trivolvis (...

Evidence for major histocompatibility complex (MHC) restriction of soluble helper effects was observed in the generation of syngeneic killer T cells to trinitrophenyl-altered self. Ia-bearing T cells obscure the observation of such interactions, thus, must be removed to detect MHC restriction of nonspecific soluble helper factor supernates (HFS). Genetic mapping studies demonstrated that the st...