Male hybrids between Anopheles gambiae and An. arabiensis suffer from hybrid sterility, and inviability effects are sometimes present as well. We examined the genetic basis of these reproductive barriers between the two species, using 21 microsatellite markers. Generally, recessive inviability effects were found on the X chromosome of gambiae that are incompatible with at least one factor on ea...

The X chromosome plays a central role in the evolution of reproductive isolation, but few studies have examined the genetic basis of X-linked incompatibilities during the early stages of speciation. We report the results of a large experiment focused on the reciprocal introgression of the X chromosome between two species of house mice, Mus musculus and M. domesticus. Introgression of the M. mus...

OBJECTIVE To develop an easy-handling totally closed pediatric peritoneal dialysis system and assess the sterility assurance level. METHODS From February to December 2008 was designed and developed a closed-system pediatric peritoneal dialysis at the Bioengineering Division of Braile Biomédica Indústria, Comércio e Representações S/A. Twenty systems were manufactured and submitted to sterilit...

(ii) Samples required: (a) The mitomycin used in making the batch: Five packages, each containing approximately 100 milligrams. (b) The batch: (1) For all tests except sterility: A minimum of 25 immediate containers. (2) For sterility testing: 20 immediate containers, collected at regular intervals throughout each filling operation. (b) Tests and methods of assay—(1) Potency. Proceed as directe...

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