Does the compound hexaaqua-zinc(ii)bis(hydrogensulfate)dihydrate, [Zn(H2O)6](HSO4·H2O)2, really exist?

Does dark energy really exist?

Apr i l 20 09 d o n d ix o n In science, the grandest revolutions are often triggered by the smallest discrepancies. In the 16th century, based on what struck many of his contemporaries as the esoteric minutiae of celestial motions, Copernicus suggested that Earth was not, in fact, at the center of the universe. In our own era, another revolution began to unfold 11 years ago with the discovery ...

Does particle disease really exist?

Sir,—The hypothesis of wear particles causing foreign-body reaction, periprosthetic osteolysis and eventually prosthetic loosening was already put forward in the 1970s (Brinkmann and Heilmann 1974, Willert et al. 1974). The term cement disease was coined in the 1980s (Jones and Hungerford 1987), generalized to particle disease in the 1990s (Harris 1994), and wear particles are still widely cons...

Adrenopause – does it really exist?

In ageing human adrenal glands there occur some morphological changes which result in alterations of their cortex endocrine function. Glucocorticoid-excreting cells in the zona glomerulosa live longer than androgen-producing cells in the zona reticularis, which undergo significant apoptosis. Therefore, in elderly humans cortisol levels are normal (significantly higher than at young age), while ...

Particle disease really does exist

© 2017 The Author(s). Published by Taylor & Francis on behalf of the Nordic Orthopedic Federation. This is an Open Access article distributed under the terms of the Creative Commons Attribution-Non-Commercial License (https://creativecommons.org/licenses/by-nc/3.0) DOI 10.1080/17453674.2017.1402463 Sir,—In a recent correspondence, Dr. Mjöberg questions the role of wear particles in the pathogen...

Does a tradeoff really exist?