...Azadeh Tafreshiha; Sven A. van der Burg; Kato Smits; Laila A. Blömer; J. Alexander Heimel ABSTRACT Innate defensive responses such as freezing or escape are essential for animal survival. Mice show defensive behaviour to stimuli sweeping overhead, like a bird cruising the sky. Here, we tested...

... is capable of surviving exposures to cold. However, the freezing tolerance of this species had not yet been examined. Low temperature is known to alter membrane integrity in insects, but whether chilling or freezing compromises DNA integrity remains a matter of speculation. In the present study, we subjected...

... in the presence of endogenous levels of glucose suggests that increased glutathione recycling may occur as a result of passive regulation of glutathione reductase by rising levels of glucose during freezing. * Author for correspondence ( neal.dawson@gmail.com ) Competing interests The authors declare...

... that mPFC, especially the infralimbic region, is crucial in the extinction of fear memory. * Author for correspondence ( markus.fendt@novartis.com ) 22 12 2011 © 2012. 2012 AMN082 extinction fear conditioning freezing metabotropic glutamate receptor mGluR7 prefrontal cortex...

...Bishwo N. Adhikari; Diana H. Wall; Byron J. Adams SUMMARY Nematodes are the dominant soil animals of the Antarctic Dry Valleys and are capable of surviving desiccation and freezing in an anhydrobiotic state. Genes induced by desiccation stress have been successfully enumerated in nematodes; however...

..., indicating that these concentrations have similar aversive properties. In a second experiment, these two concentrations were then tested for their ability to induce freezing, a species-specific defensive response. Only TMT but not butyric acid induced freezing in the rats. This supports the hypothesis...

..., France (e-mail: yann.voituron@univ-lyon1.fr ) 3 3 2008 © The Company of Biologists Limited 2008 2008 Lacerta cold hardiness mitochondria superoxide supercooling freezing These data (antioxidant defences and increase in repUCP expression,especially during supercooling...

...Gary C. Packard; Mary J. Packard SUMMARY Many physiologists believe that hatchling painted turtles ( Chrysemys picta ) provide a remarkable, and possibly unique, example of `natural freeze-tolerance' in an amniotic vertebrate. However, the concept of natural freeze-tolerance in neonatal painted...

...David A. Wharton; Gordon Goodall; Craig J. Marshall SUMMARY The relative importance of freezing tolerance and cryoprotective dehydration in the Antarctic nematode Panagrolaimus davidi has been investigated. If nucleation of the medium is initiated at a high subzero temperature (-1°C), the nematodes...

...D. A. Wharton; H. Ramløv ABSTRACT Differential scanning calorimetry (DSC) was used to determine the thermal events associated with freezing and melting of the cysts of the potato-cyst nematode Globodera rostochiensis . There were no thermal events during the cooling of dry cysts from 5 to –60 °C...

...D. A. Wharton; G. S. Allan ABSTRACT All free-living stages of the nematode parasite of sheep, Trichostrongylus colubriformis Giles, survived exposure to freezing temperatures in contact with water, with the exception of the first-stage juvenile (JI). The third-stage juvenile (J3) was the most...

...S. Morris 14 4 1988 © 1988 by Company of Biologists 1988 haemocyanin freezing oxygen affinity association state The addition of protease inhibitors and antibiotics provides a valuable means of stabilizing proteins in solution but this is less desirable...