What is the definition of Homeless Blood Cells?

Homeless blood cells? Oh boy, let's dive into this medical mystery! Homeless blood cells are those sneaky red and white blood cells that don't have a fixed home anymore. They're basically wandering around like lost travelers in a blood bank, looking for their next 'destination' - a healthy body to call their own. They could be anything from a desperate cat owner (for more feline-friendly blood type) to a rogue astronaut (seeking the 'oxygen-rich' atmosphere of Earth).

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Here's an unsettling example sentence using this term: "The homeless blood cells in the abandoned alleyway decided to form an impromptu band of misfits, trading 'insecticide' for red blood cell transfusions."