Aims: outcomes of research in education and training are partly a function the context which that study takes place, questions we ask, what is feasible. Many about learning, involves repeated measurements particular time window, practical usually such offering an intervention to some but not all learners does make sense or unethical. For quality assurance other purposes, centers may have very l...

Two-dimensional and bidirectional electrophoretic techniques previously developed for the specific detection of circular viroids and virusoids in plants material were used to analyze preparations of low molecular weight RNA from the granulomatous bowel tissue of patients with Crohn's disease and from corresponding tissue of healthy controls. A major and two minor RNA species of about 300 nucleo...

Reaction networks taken with mass-action kinetics arise in many settings, such as epidemiology, population biology, and systems of chemical reactions. Bistable reaction networks are posited to underlie biochemical switches, which motivates the following question: Which reaction networks have the capacity for multiple steady states? Mathematically, this asks, from among certain parametrized fami...

JJEE BB CC llaa ssss iicc ss JEB Classics is an occasional column, featuring historic publications from The Journal of Experimental Biology. These articles, written by modern experts in the field, discuss each classic paper’s impact on the field of biology and their own work. A PDF of the original paper accompanies each article, and can be found on the journal’s website as supplemental data. SM...

Although CT scans do not reflect lymph node metastasis as accurately as a pathologic examination, a case may be regarded as negative for lymph node metastasis if no signs of metastasis appear using CT. 6 Therefore, the authors of the current case 7 reexamined a 7-mm perirectal lymph node identified on a CT scan after EMR for a 8-mm rectal NET. The pathological type of tumor also significantly a...