Labour’s persistent failure to address its electorate’s salient concerns is behind the protest vote, asserts DIANE ABBOTT
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Hormones and control
The flexibility of the hormonal system in humans means that our biology is increasingly in our own hands, write ROX MIDDLETON, LIAM SHAW and MIRIAM GAUNTLETT
LIFE-CHANGING: A selection of contraceptive pill packs
[Kate Whitley/Creative Commons]
Washington’s lawless behaviour towards countries in the region it considers its ‘back yard’ should be condemned by all law-abiding people, says LUKE DANIELS
In part I of a serialisation of his new book, JOHN McINALLY takes a look at the early days of organising government workers
Colombia’s success in controlling the drug trade should be recognised and its sovereignty respected, argues Dr GLORY SAAVEDRA
The shadow lord chancellor has recently made a name for himself as an rabid hater of immigration – but there are exceptions to every rule, says SOLOMON HUGHES
Plaid Cymru’s front-bench spokesman on health and social services MABON AP GWYNFOR, in a two-part series, analyses the Caerphilly by-election and the wider political scene in Wales ahead of the 2026 Senedd election
A MULTICELLULAR organism is a spectacular thing. Like all other multicellular beings, we have cells that co-ordinate with each other during growth to diversify into different types. The co-ordination of this process in itself is an extraordinary endeavour: the average adult human is made up of about 30 trillion human cells of around 200 types.
There are several systems by which cells respond to and produce information. Sensory organs can produce triggers, the nervous system acts as an electrically based electrical wiring for superfast connectivity, and individual cells themselves can react to physical forces or to chemicals. These signalling chemicals, most of which circulate in our blood, are known as hormones.
Any circulating chemical that triggers change can be classified as a hormone, meaning they are a diverse group of chemicals. Some trigger organ growth, and those organs then go on to produce other hormones.
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