Invertase in leaves: Conundrum or control point?

Hysterical stupor or yogic sleep? The conundrum

A woman in the care of the author 40 years ago was reported to have been sleeping for 2 days. We treated her condition as conversion hysteria. Her private psychiatrist was the renowned R. D. Laing; he was unhappy with our line of management, on the grounds of the arbitrariness of the diagnosis, the labelling of the woman with a diagnosis of hysteria and the treatment of the patient without her ...

Nasolabial Cyst: A Diagnostic Clarity or Conundrum?

Case-Cohort Conundrum: Fish or No Fish?

Author's disclosures of potential conflicts of interest are found at the end of this article. O ncology advanced practitioners (APs) are advocates for and witnesses to the increasing interest in self-regulation of health care by patients. Data from the 2007 National Health Interview Survey (a cross-sectional household interview) suggest that one way in which patients with cancer attempt to mana...

Star-forming or Starbursting? the Ultraviolet Conundrum

Compared to starburst galaxies, normal star forming galaxies have been shown to display a much larger dispersion of the dust attenuation at fixed reddening through studies of the IRX-β diagram (the IR/UV ratio “IRX” versus the UV color “β”). To investigate the causes of this larger dispersion and attempt to isolate second parameters, we have used GALEX UV, ground-based optical, and Spitzer infr...

The telomere lengthening conundrum—artifact or biology?

Recent longitudinal studies of age-dependent leukocyte telomere length (LTL) attrition have reported that variable proportions of individuals experience LTL lengthening. Often, LTL lengthening has been taken at face value, and authors have speculated about the biological causation of this finding. Based on empirical data and theoretical considerations, we show that regardless of the method used...