What is the definition of Classics Blood Cells?

"Classics blood cells, my friends, are like the old-school jazz band at a funeral: they're all in their prime, but some of 'em have started to play the wrong rhythm. Red blood cells, for instance, are the MVPs of our bloodstream, constantly on a mission to deliver oxygen to our vital organs. But then there are the platelets, the unsung heroes of the clotting department - they're like the last-minute crew in a horror movie, popping up just when you need them the most to stop the bleed before it's too late. And let's not forget the white blood cells, the body's personal bodyguards, always ready to take on any 'invaders' trying to make an entrance. But here's a bit of the edgy side: 'Classics blood cells, they're always the first to know when the world is ending - and sometimes they just need a coffee break.'"