Abstract Background Anomalous origin of the left circumflex coronary artery (LCx) from right sinus Valsalva (RSV) is most frequent among anomalous aortic arteries (AAOCA). The estimated prevalence low (about 0.4%) and in cases asymptomatic. Angina, shortness breath, myocardial infarction has been described some patients, although diagnostic therapeutic management controversial, particularly eld...

In spite of the great diversity of iguanian lizards, detailed descriptions of their osteocrania and postembryonic development are rare. Herein, the adult cranial osteology of the tropidurid lizard Stenocercus guentheri and its postembryonic development are described based on cleared and double-stained and dry skeletal specimens from a single Ecuadorian population. The amphikinetic skull of S. g...

The masticatory pattern of Sphenodon punctatus, the sole remaining rhynchocephalian, now restricted to islands off the coast of New Zealand, has been analyzed by detailed anatomy, cinematography, cinefluoroscopy, and electromyography. Food reduction consists of a closing, crushing bite followed by a propalineal sliding of the dentary row between the maxillary and palatine ones. The large, flesh...

For decades, numerous surveys have asked Americans the ‘‘Most Important Problem’’ (MIP) question: ‘‘What do you think is the most important problem facing this country today?’’ Global warming and the environment have rarely been cited by more than a small number of respondents in these surveys in recent years, which might seem to suggest that these have not been the most important issues to Ame...

The in vitro motility of B16-F1 melanoma cells is enhanced by incubation with a monoclonal antibody against gp78, previously charac terized as a motility factor receptor. This antibody was used to study the relationship between motility stimulation in vitro and metastatic ability in vivo in the B16-F1 and K-1735 murine melanoma systems. While both highand low-metastatic variants exhibited enhan...