Thank you for visiting nature.com. You are using a browser version with limited support for CSS. To obtain
the best experience, we recommend you use a more up to date browser (or turn off compatibility mode in
Internet Explorer). In the meantime, to ensure continued support, we are displaying the site without styles
and JavaScript.
Lyophilized macromolecules complexed with zinc and encapsulated within degradable microspheres are slowly released for at least one month (pages 795–799).
Mice lacking TNF receptors show increased neuronal damage in response to excitotoxins or cerebral ischemia implying that TNF is neuroprotective (pages 788–794).
Elevated levels of wild-type p53 in testicular tumors may contribute to their sensitivity to DNA damaging drugs and explain their high cure rate (pages 804–810).