Sep 16, 1983 - Bacterial infection often involves toxin-mediated damage to the host. This can occur at mucosal epithelial surfaces, in subepithelial tissues (involving connective tissue, blood vessels and host defence cells), or at organ or tissue sites distant

Nov 19, 1980 - The tumour-inducing plasmids of Agrobacterium tumefaciens (Ti-plasmids) reveal several interesting properties. They are catabolic plasmids, which, instead of rendering Agrobacterium strains capable of catabolizing compounds found in Nature, force a

Aug 6, 2012 - The reaction and diffusion of morphogens is a mechanism widely used to explain many spatial patterns in physics, chemistry and developmental biology. However, because experimental control is limited in most biological systems, it is often unclear

Ting-Hsuan Chen, Chunyan Guo, Xin Zhao, Yucheng Yao, Kristina I. Boström, Margaret N. Wong, Yin Tintut, Linda L. Demer, Chih-Ming Ho, Alan Garfinkel

Feb 25, 2009 - Cells elongate on a surface with nanogrooved (NG) patterns and align along that pattern. Although various models have been proposed for how this occurs, much remains to be clarified. Studies with fixed cells do not lend themselves to answering some

Satoshi Fujita, Masahiro Ohshima, Hiroo Iwata

Nov 17, 1986 - During the 1960s a wide range of studies provided an information base that led to the suggestion that auxin-regulated cell processes - especially cell elongation - may be mediated by auxin-regulated gene expression. Indirect evidence from our work,

Nov 6, 2014 - The use of X-rays for medical diagnosis is enhancing exposure to low radiation doses. Exposure to extremely low-frequency electromagnetic or magnetic fields is also increasing. Epidemiological studies show consistent associations of childhood

Shreya Saha, Lisa Woodbine, Jackie Haines, Margaret Coster, Nicole Ricket, Lara Barazzuol, Elizabeth Ainsbury, Zenon Sienkiewicz, Penny Jeggo

Sep 26, 2014 - In the mammalian brain, epigenetic mechanisms are clearly involved in the regulation of self-renewal of neural stem cells and the derivation of their descendants, i.e. neurons, astrocytes and oligodendrocytes, according to the developmental timing

Takuya Imamura, Masahiro Uesaka, Kinichi Nakashima

Dec 5, 2014 - Formation of a eutherian mammal requires concurrent establishment of embryonic and extraembryonic lineages. The functions of the trophectoderm and primitive endoderm are to enable implantation in the maternal uterus, axis specification and delivery

Thorsten Boroviak, Jennifer Nichols

Jun 6, 2012 - Hydroxyapatite (HA) doped with trace elements has attracted much attention recently owing to its excellent biological functions. Herein, we use a facile co-precipitation method to incorporate selenium into HA by adding sodium selenite during

Yanhua Wang, Jun Ma, Lei Zhou, Jin Chen, Yonghui Liu, Zhiye Qiu, Shengmin Zhang