• cell
  • Lipids havepreviously been considered primarily as building blocks of the cell membrane, but are now also recognized as important cell signaling molecules. (diva-portal.org)
  • Growth factor receptors transmit biological signals for the stimulation of cell growth in vitro and in vivo and their autocrine stimulation may be involved in tumorigenesis. (diva-portal.org)
  • Investigation of cell lines either deficient in, or over-expressing components of the death signaling machinery provided insight into the S100A8/A9-mediated cell death pathway. (diva-portal.org)
  • human
  • It is therefore of great importance to understand growth factor receptor reactions in response to stimuli such as calcium depletion or ultraviolet radiation, which normal human cells are invariably exposed to during their growth cycle. (diva-portal.org)
  • cells
  • Nitric oxide (NO) is a signaling molecule that is produced by many different kinds of cells, and it is known to mediate actions such as blood vessel dilation, communication between nerve cells, and killing of bacteria in infections. (diva-portal.org)
  • A complex of two S100 EF-hand calcium-binding proteins S100A8/A9 induces apoptosis in various cells, especially tumor cells. (diva-portal.org)