Biology News
Mitochondrial cyclophilin D regulates T cell metabolic responses and disease tolerance to tuberculosis - Science


Science
Since the discovery of Mycobacterium tuberculosis (Mtb) over a century ago, great progress has been made in defining mechanisms of host resistance to tuberculosis (TB). By contrast, our understanding of how 90 to 95% of infected individuals live with ...

Hydrodynamics in cell studies - Phys.Org


Phys.Org
In collaboration with ETH Zurich, our team at IBM Research – Zurich published an article reviewing the interaction of liquid flows with biological cells. Our work was featured on the cover of the May 23 issue of Chemical Reviews, a highly-cited peer ...

Cellular cartographer Voeltz named HHMI investigator, granted $8 million - CU Boulder Today


CU Boulder Today
Flip open an intro-to-biology textbook and you'll likely find a cartoon image of the basic cell structure, with its kidney-bean shaped, round and oblong organs – called organelles - spread out with unique roles and little contact with each other ...

Cell Cycle Info

Montreal, Quebec - 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 called mitosis and cytokinesis. In mitosis, the cell's chromosomes are partitioned between the 2 daughter cells. In cytokinesis, the cytoplasm physically divides, forming the 2 daughter cells.

Before we look at each stage in the cell cycle in detail, let's examine some additional terminology. Cells that have temporarily stopped dividing are said to have entered a quiescent state called G0 phase. Cells that have permanently stopped dividing are said to be senescent. Molecular events in the cell cycle must progress in a sequential and ordered manner. The molecular events of the cell cycle are controlled by 2 key regulatory molecules: cyclins and cyclin-dependent kinases. Rest of the information may be obtained from the website.

Related
The Stages of the Cell Cycle
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 s

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

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.

Life Cycle of Takakia
Japan

Diagram illustrating the details of the life cycle of T. ceratophylla.

Citric Acid Cycle
United States

Diagram of steps in Krebs' tricarboxylic acid cycle, with 3D presentation dependent on Chime plug-in, from student at University of North Texas.