Transmigration of Unborn Mice

Our unborn children at risk?

T he study by Ang et al. (1) in this issue of PNAS strikes a precautionary note, in that it presents experimental evidence that prolonged continuous ultrasound (US) exposure may cause mild disruption in neuronal migration to the cerebral cortex in fetal mice. The authors (1) suggest that such neuronal heterotopia may result in anomalies in brain circuitry and synaptic activity. Does this study ...

Mothering Your Unborn Baby

Transmigration of Mandibular Canines

The purpose of this paper is to present the first case of unusual reverse oblique (110 degrees to midsagittal plane) migration of mandibular right canine crossing the jaw midline and piercing the lower border of the mandible at the level of the opposite canine and also to report two more cases of transmigrated mandibular canine and one case of transmigrating mandibular canine. Mandibular canine...

Transmigration of object identity

The object-oriented paradigm is one of the central programming paradigms of our time. The following description is a generally accepted characterization of that paradigm: “An object has state, behavior, and identity” [9]. The concept of object identity plays an important role here insofar it is the only characteristic element that is not available in purely declarative programming languages wit...

Transmigration of ingested asbestos.

There has been speculation that the ingestion of asbestos in food and drinking water may play some role in the etiology of cancer of the gastrointestinal (GI) tract. An important question in the evaluation of the possible human cancer risk associated with asbestos ingestion is whether fibers can penetrate into and through the GI tract in sufficient numbers to cause adverse systemic or local eff...