How and why we get cancer as explained to 8 year old Sascha by Darren Saunders, Associate professor, UNSW and secretary of Science and Technology Australia. Note Darren's final sentence - "Importantly, we can almost never say for sure why an individual person has cancer." : theconversation.com/curious...
Check out the amazing 3 minute video containing two animations, illustrating how our uncoiled DNA (about 2 metres/6 feet long) is packed so it can fit within our cells and how our 3 billion base pairs of DNA are copied - which takes just one hour! youtube.com/watch?time_cont...
Copying all that genetic information so rapidly, copy errors creep in all the time - hence the importance of TP53 'the guardian of the genome': ghr.nlm.nih.gov/gene/TP53 and other error detection and correction mechanisms.
Interestingly, the animations were made at the Walter and Eliza Hall Institute of Medical Research - where landmark research discovery eventually led to the development of Venetoclax! wehi.edu.au/research-resear...
Our lymphocytes (and hence our CLL cells) are among the smallest of our cells at about 7 microns in diameter (about one tenth of a hair's thickness). The largest cell - a human egg cell, is barely visible to the unaided human eye and about 15 times wider, just about the width of a strand of our hair.
Neil
Photo: Proteas