Cell signaling
Cell signalling is part of a complex system of communication that governs basic cellular activities and coordinates cell actions. The ability of cells to perceive and correctly respond to their microe...
Cell signaling - Wikipedia
Here’s How Stanford Scientists Measured the Speed of Death
For the first time ever, scientists at Stanford University have been able to observe the speed at which death spreads across a cell once the self-destruct 'trigger wave' has been initiated. Their conc...
Neurons forming connections in vitro.... - Neuroscience News and Research
Neurons forming connections in vitro. via mymedicalwall
A Newly Made RNA Strand Bolsters Ideas About How Life On Earth Began
RNA molecule is able to synthesize other RNAs, a feat believed central to the origin of life
New 'Artificial Synapses' Could Let Supercomputers Mimic the Human Brain
Brain-like machines with human-like abilities to solve problems could become a reality, researchers say.
Reflux Disease Not Caused By Acid, But Inflammation, Study Shows
For over 80 years, scientists have said that the condition is caused by stomach acid backing up through the esophagus – until now.
Do pheromones make you sexier? The tantalizing truth
Are you really sending out airborne aphrodisiacs to potential mates? Alex Riley investigates.
Researchers Make Link Between Genetics, Aging
University of Georgia scientists have shown a hormone instrumental in the aging process is under genetic control, introducing a new pathway by which genetics regulates aging and disease. Previous stud...
Only The Lonely - A Surprise Role For Dopamine In Social Interplay
Scientists have shown that the chemical signal dopamine plays an unexpected role in social interactions. In mice, nerve cells in the brain that release dopamine become particularly active in animals k...
How Synapses Work
Salk scientists computationally reconstructed brain tissue in the hippocampus to study the sizes of connections (synapses). The larger the synapse, the more likely the neuron will send a signal to a n...
Scientists Discover Why X Chromosome Lack Housekeeping Genes
Men have one copy, women have two, but scientists have long puzzled over why the human X chromosome mostly contains genes that are active in a small number of tissues. Now, a team of researchers led b...
Tracing Our 'Tree Of Life' To Its Roots: 3.8 Billion-Year-Old Molecule Reveals Clues About How Life On Earth Began...And It Could Help Us Find Aliens On Other Planets
By studying molecules in living human cells, researchers believe they have been able to trace the evolution of biology back to its roots. Experts from Georgia Institute of Technology have discovered t...
Biologists Unravel Drug-Resistance Mechanism In Tumor Cells
About half of all tumors are missing a gene called p53, which helps healthy cells prevent genetic mutations. Many of these tumors develop resistance to chemotherapy drugs that kill cells by damaging t...
New Findings Shed Light On Fundamental Process Of DNA Repair
Inside the trillions of cells that make up the human body, things are rarely silent. Molecules are constantly being made, moved, and modified — and during these processes, mistakes are sometimes made....
Possible New Weapon Against PTSD
About 8 million Americans suffer from nightmares and flashbacks to a traumatic event. This condition, known as post-traumatic stress disorder (PTSD), is particularly common among soldiers who have bee...
Slower Melting Ice Cream In Pipeline Thanks To New Ingredient
Childhood memories of sticky hands from melting ice cream cones could soon become obsolete, thanks to a new food ingredient. Scientists have discovered a naturally occurring protein that can be used t...
Cell-cell interaction
Cell–cell interaction refers to the direct interactions between cell surfaces that play a crucial role in the development and function of multicellular organisms.These interactions allow cells to comm...
Cell-cell interaction - Wikipedia
Cell junction
A cell junction (or intercellular bridge) is a type of structure that exists within the tissue of some multicellular organisms, such as animals. Cell junctions consist of multiprotein complexes that...
Cell junction - Wikipedia
Gap junction
A gap junction may also be called a nexus or macula communicans. When found in nerves they are also referred to as an electrical synapse. An ephapse by modern definition is not a gap junction. See Eph...
Gap junction - Wikipedia
Chemical synapse
Chemical synapses are specialized junctions through which neurons signal to each other and to non-neuronal cells such as those in muscles or glands. Chemical synapses allow neurons to form circuits wi...
Microtubule
Microtubules are a component of the cytoskeleton, found throughout the cytoplasm. These tubular polymers of tubulin can grow as long as 50 micrometres and are highly dynamic. The outer diameter o...
Microtubule - Wikipedia
Membrane nanotube
Membrane nanotubes, membrane nanotubules or cytoneme are long and thin tubes formed from the plasma membrane that connect different animal cells over long distances, and could sometimes extend for ov...
Membrane nanotube - Wikipedia
Duct (anatomy)
In anatomy and physiology, a duct is a circumscribed channel leading from an exocrine gland or organ.
Examples include:
Duct (anatomy) - Wikipedia
Juxtacrine signalling
In biology, juxtacrine signalling (or contact-dependent signalling) is a type of cell / cell or cell / extracellular matrix signalling in multicellular organisms that requires close contact. Hence, th...
Paracrine signalling
Paracrine signaling is a form of cell-cell communication in which a cell produces a signal to induce changes in nearby cells, altering the behavior or differentiation of those cells. Signaling molecul...
Paracrine signalling - Wikipedia
Endocrine system
The endocrine system refers to the collection of glands of an organism that secrete hormones directly into the circulatory system to be carried towards a distant target organ. The major endocrine glan...
Endocrine system - Wikipedia
Ligand (biochemistry)
In biochemistry and pharmacology, a ligand is a substance (usually a small molecule) that forms a complex with a biomolecule to serve a biological purpose. In protein-ligand binding, the ligand is usu...
Ligand (biochemistry) - Wikipedia
Hormone
A hormone (from Greek ὁρμή, "impetus") is class of signaling molecules produced by glands in multicellular organisms that are transported by the circulatory system to target distant organs to regulat...
Neurotransmitter
Neurotransmitters are endogenous chemicals that transmit signals across a synapse from one neuron (nerve cell) to another 'target' neuron. Neurotransmitters are released from synaptic vesicles in syna...
Cytokine
Cytokines (Greek:Cyto from Greek "κύτταρο" kyttaro "cell" + Kines from Greek "κίνηση" kinisi "movement") are a broad and loose category of small proteins (~5–20 kDa) that are important in cell signali...