]> http://biosphere.biologydaily.com/help/taxonomy/term/1016/0 The study of cells en http://biosphere.biologydaily.com/help/node/6325 This is the first animated computer simulation of cell proliferation in a living tissue. The program takes into account the long-neglected, although, well known fact that a living tissue represents an integral structure composed of interconnected cells and having a tissue-specific architectonics. In the program, the tissue is represented as a two-dimensional hexagonal lattice that can be curved and folded. Cell contacts within the lattice are permanent and are not broken by cell division. The program operates with two basic mechanisms: a) the division wave and b) the cell death (apoptosis) serving as an initiation point for cell division. Thu, 21 Jul 2005 10:34:02 -0700 http://biosphere.biologydaily.com/help/node/5371 The Annals PrePrint service provides rapid electronic publication of articles as they are received from the volume editors. PrePrint articles are fully reviewed and edited, and appear here in close to their final form. The final versions will be published in print and at Annals Online in the coming weeks. Sun, 12 Jun 2005 23:24:56 -0700 http://biosphere.biologydaily.com/help/node/5369 Stem cells continue to be of enormous scientific and clinical interest, due to the myriad therapeutic possibilities promised by their use. The initial excitement generated by identification of novel stem cell populations has given way to more focused effort on methods to manipulate their differentiation and self-renewal capacities. A number of genome-scale studies are now underway to catalog stem cell gene expression profiles or generate mouse mutants in stem cell-control genes. Sun, 12 Jun 2005 23:16:48 -0700 http://biosphere.biologydaily.com/help/node/5368 Meiosis is an important biological concept that all students should know and understand. Its basic function is important for genetic diversity and the continuation of life in all plants and animals. This tutorial was made to help simplify a somewhat confusing, but important process. Below is the AP Biology Laboratory Manual's Introduction to meiosis Sun, 12 Jun 2005 23:13:44 -0700 http://biosphere.biologydaily.com/help/node/5366 The goal of this exercise is to introduce you to the kinds of cells that make up all living systems, and to contrast cells with viruses. You should be able to name the 6 Kingdoms, understand the differences between prokaryotes and eukaryotes, and be able to describe the basic functions of the eukaryotic cell organelles. Sun, 12 Jun 2005 23:09:41 -0700 http://biosphere.biologydaily.com/help/node/5367 A series of useful tutorials on various topics of cell biology Sun, 12 Jun 2005 23:11:25 -0700 http://biosphere.biologydaily.com/help/node/5370 ClinicalTrials.gov provides regularly updated information about federally and privately supported clinical research in human volunteers. ClinicalTrials.gov gives you information about a trial's purpose, who may participate, locations, and phone numbers for more details. Sun, 12 Jun 2005 23:23:03 -0700