Ovulation induction and artificial insemination of a captive polar bear (Ursus maritimus) using fresh semen.

In 2008, polar bears were listed as a species threatened with extinction by the U.S. Endangered Species Act.

[Axillary lymph node microcalcifications disclosing breast cancer].

Intra nodal calcifications associate with breast cancer are uncommon. The rare publications always describe malignant microcaocifications in axillary lymph nodes, evolving with the primary breast tumor imaged on mammography. In the reported observation, we observed calcified metastatic neoplasm in axillary nodes, preceding the intramammary lesion.

Present state of development of neo-electroencephalography.

Neo-electroencephalography (neo-EEG) is a new technique for recording and analyzing brain activity. Mathematical and computerized reconstitution yields a monopolar-like montage. Given the polymorphism of the brain's electrical activity, the computer detects the correct monopolar-like montage for each activity in steps of 0.

Potential gradient of spike and wave temporal foci detected by vertical derivation and neo-electroencephalography.

We studied the electrical pattern of spikes and waves and unitemporal foci by compared analysis. One analysis was obtained by two conventional derivations: longitudinal plus triangular and referential to a neck electrode ('vertical derivation'). The other analysis is quantified by the same vertical derivation and by a monopolar-like computerized derivation, the Neo-EEG.