The life cycle of all tracheophytes (vascular plants), bryophytes (mosses and liverworts), and many algae and fungi is based on an alternation of generations, or different life phases: the gametophyte, which produces gametes, or sex cells, alternating with the sporophyte, which produces spores.
This site is best experienced using Internet Explorer 8 or Firefox. Twin City Die Castings (TCDC) is a full service provider of precision aluminum and magnesium die castings. TCDC has been family owned since 1919 when it was founded in Minneapolis, Minnesota. We now have three ISO/TS 16949:2009 certified US locations.
Transcranial Doppler (TCD) is a diagnostic tool that can be used at bedside to assess the cerebral vasculature noninvasively. It is inexpensive, safe, and reliable when compared with other techniques. It can be repeated multiple times and can be used for continuous monitoring if needed.