Biology News
TCR signal strength controls the differentiation of CD4 - Science


Science
T cell differentiation into effector and memory T cell subsets is influenced by T cell receptor (TCR) signals. Snook et al. examine how TCR signals influence CD4+ T cell differentiation using a panel of cloned TCRs that recognize the same MHC II ...

Cell Studio: Serious games for immunology - Phys.Org


Phys.Org
The novel platform, known as Cell Studio, can simulate an organic microenvironment with biological and biophysical rules at the cellular level. Several biological scenarios can be simulated, including a 2-D or 3-D spatial patch of tissue or cell ...

Defining Interacting Regulatory Genes That Define Cell Subtypes - Technology Networks


Technology Networks
“The method has great potential for regenerative medicine when it comes to replacing cell subpopulations that have been lost in the course of disease, for example,” explains Prof. Dr Antonio del Sol, head of the Computational Biology group of the ...

The Stages of the Cell Cycle

Atlanta, Georgia - United States

The stages of cell division (G1, S, G2. mitosis) are described and illustrated with an animation of the cell cycle:

- G1 and G2 stand for 'gaps'. This refers to the fact that nothing very obvious is occurring in the nucleus of the cells during these stages. The cells are actually very active. They are growing and preparing to divide.
- S stands for synthesis. This is the phase of the cell cycle in which the DNA is copied or replicated.
- M stands for mitosis. This is the stage of the cell cycle in which the cell actually divides into two daughter cells.

Related
Cell Cycle Info
Canada

The cell cycle refers to the events that take place in a cell between its inception and subsequent replication. The cell cycle is composed of 4 distinct phases: G1 phase, S phase, G2 phase, and M phase. Interphase is a collective term that describes the G1, S, and G2 phases. During interphase, the cell is growing and preparing for mitosis (M phase) by accumulating nutrients and replicating DNA. The M phase is composed of 2 coupled processes calle

Cell Cycle and Mitosis Tutorial
United States

Includes images and a QuickTime animation of the process.

Cell Cycle - Tocris Bioscience
United Kingdom

The cell cycle is the regulatory network that controls the order and timing of cellular proliferation events. It is divided into four stages, G1-S-G2-M. The G1 and G2 stages stands for 'GAP 1' and 'GAP 2' respectively. The S stage stands for 'Synthesis' and is the stage when DNA replication occurs. The M stage stands for 'mitosis', and is when nuclear and cytoplasmic division occurs, halving the genome.

Yeast Cell Cycle Analysis Project
United States

Resource for information on yeast genes regulated over the cell division cycle, from Stanford University, California.

Landes Bioscience Journals: Cell Cycle
United States

Cell Cycle covers all topics from man to virus, from DNA to RNA, from aging to development, from cell senescence to stem cells, from apoptosis to autophagy, from cancer to neurobiology, from molecular and theoretical biology to medicine and therapy. Cell Cycle utilizes an online submission and tracking system designed to provide efficient service to authors. Through the online system, author files are automatically converted to PDFs, submissions

United States

Offers images throughout the life cycle. From the Department of Entromology, University of Nebraska-Lincoln.

Developmental Stages of Spissistilus festinus Most Susceptible to Hemipteran Predators
United States

Suggests that S. festinus nymphs are potential prey for G. punctipes and N. roseipennis in the field. Text version of Florida Entomologist article, with a hyperlink to the PDF version.

Ant Colony Cycle
United States

View photos and read explanations of the life and building cycle of an ant colony. Click on the images for additional details.

Germany

Photographic study following the process from mating to the emergence of the butterfly from the pupa.

The Morel Life Cycle
United States

An article by Tom Volk on this delicious fungus and attempts to cultivate it.