Clear science, from cell to signal.
Anyone who has waited for the 142 on a rainy Manchester afternoon knows that crowd size changes everything. Cells face the same arithmetic at their membranes, where receptor density and ligand competition determine whether a signal arrives crisply or dissolves into noise.
A fever is the immune system's smoke alarm doing its job; a cytokine storm is that alarm fused on, filling the house with heat while the fire spreads. We trace the signalling pathways that separate a controlled immune response from a runaway one, and why some treatments for severe flu and COVID-19 deliberately fight the body rather than the virus.
On a summer afternoon at any county cricket ground, silver hair abounds — and each one is a record of a signalling conversation that quietly failed. This article follows the melanocyte stem cell from its niche in the hair follicle to its slow retreat, and explains why the greying follicle has become one of the most instructive models in tissue ageing research.
When a caterpillar begins to chew a leaf, the wounded plant does something remarkable: it exhales a chemical alarm that its neighbours can smell and act upon. This article traces the airborne signalling pathway behind that whisper, and asks what it means for British fields, gardens and allotments.
The delayed train is a trivial inconvenience, yet the body answers it with the same machinery evolved for mortal danger. We trace the sympathetic signalling cascade from hypothalamus to adrenaline surge to cortisol's slower arrival — and ask what repeated, unrecovered activation does to a system built for emergencies.
Cells are bombarded with chemical messages that demand attention, yet they cannot afford to respond at full strength forever. This article examines desensitisation and adaptation — the receptor-level machinery that lets a cell lower the volume — and why the same process explains both the fading smell of fresh bread and the waning power of a salbutamol inhaler.
Every immune response depends as much on a reliable off-switch as on a sharp alarm. This article examines what happens when T cells and cytokine pathways keep transmitting after the threat has gone, using rheumatoid arthritis and multiple sclerosis as clinical case studies, and how UK-led work on checkpoints and JAK inhibitors is restoring the silence.
After a slice of toast or a full English, your pancreatic beta cells perform an extraordinary act of molecular accounting, converting rising blood glucose into a precisely calibrated burst of insulin. We walk the pathway step by step — and examine where GLP-1 drugs such as semaglutide plug into the same circuit.
Much of cell signalling science concerns how messages are sent, yet the moment a message stops being heard is equally consequential. This article follows neurotransmitters into the machinery of reuptake and enzymatic destruction, and explains how SSRIs and nerve agents each hijack the same clean-up crew to very different ends.
Few British summers pass without someone leaping off a deckchair after a bee encounter. Behind the yelp lies a precisely choreographed signalling cascade — one that explains how the immune system recognises a threat, amplifies its message, and occasionally overreacts.
Alcohol is one of the few drugs Britons can buy with their shopping, yet its actions at the synapse remain widely misunderstood. From GABA enhancement to glutamate rebound, we follow ethanol's molecular conversation — and explain why the morning after feels so punishing.
Touch a hot pan and your hand is moving before you have consciously registered any pain. We trace that signal from fingertip to spinal cord and back, and ask what happens when a disease such as multiple sclerosis interferes with the same pathway.
The gut microbiome produces chemical signals that reach the brain — but separating the rigorous science from the wellness-industry marketing requires a pharmacologist's eye. Here is what the evidence on short-chain fatty acids, tryptophan and the vagus nerve genuinely supports.
A twisted ankle on the Pennine Way sets off a molecular emergency broadcast within minutes. We trace the inflammatory signals from damaged tissue to arriving immune cell — and ask what happens when the alarm refuses to switch off.
In 1971, Earl Sutherland received the Nobel Prize for revealing how hormones whisper to cells through a tiny internal courier, cyclic AMP. This article traces the detective work behind the second messenger concept and explains why the discovery still shapes British pharmacology half a century on.
'Scientists hail breakthrough' is a phrase UK readers meet weekly, but signalling research rarely moves at headline speed. This guide offers a practical checklist for students and writers to distinguish robust cell biology from overcooked press releases.
As temperatures fall across Britain, the body mounts a coordinated hormonal response to defend its core temperature. This article traces the signalling circuitry of thermoregulation, from thyroid hormones and adrenaline to the fever response, and examines what happens when the system fails.
Light is the body's most powerful external signal, governing vision, sleep timing and even seasonal mood. This article follows a photon's journey through phototransduction and the circadian system, and considers the pharmacological implications for treating sleep disorders and seasonal affective disorder.
Viewing the body's chemical messengers through the lens of a national postal service, this explainer follows a signal from its point of origin to its final destination. Ideal preparation for A-level and undergraduate examinations, with examples drawn directly from UK exam specifications.
Britain's laboratories and museums hold a remarkable share of the discoveries that founded modern signalling science. This tour through five landmark achievements — and the places you can still visit today — traces how cAMP, kinases and more changed medicine, and where UK-funded research is heading next.