SafePlants

Human Ear Grown on Rat: A Botanical Perspective?

While this topic might seem out of place on a plant website, the underlying techniques and research methods sometimes cross over into plant studies. Here's what we can glean from the information about the experiment where scientists grew a human ear on the back of a rat:

Considerations for Pets

• Surgical Implants: The process involves surgical implantation of cartilage. While not directly related to plants, it highlights the potential risks associated with any type of surgical procedure on animals.
• Rats as Subjects: The text extensively mentions rats and their ears, normal ear health (lumps, pimples, infections, etc.), and anatomy. Note that ear infections can affect balance. The text also mentions rat grooming habits.
• Fleas and Ticks: One section mentions using flea and tick repellent on rats, highlighting the need for vigilance against parasites.
• Bites: The text notes that rats can bite.
• Mites: The presence of mites on rats is mentioned, which could be a consideration for multi-pet households.

Considerations for Children

• Appearance: The experiment, while scientifically groundbreaking, is described as "slightly creepy," which might be unsettling for some children.
• Animal Welfare: The research raises ethical questions about animal experimentation that could prompt discussion.

Quirky Facts

• The "Vacanti Mouse" from the 1990s, which had an ear-shaped cartilage structure grown on its back, caused significant public reaction.
• Rats groom themselves more often than cats.

Summary of the Experiment

• Japanese scientists have successfully grown adult-sized human ears on the backs of rats using human stem cells.
• The process involves inducing pluripotent stem cells to grow into ear cartilage, which is then implanted onto the rat.
• Researchers at the University of Tokyo and Kyoto University are involved in this research.
• The goal is to potentially help people born with facial deformities.
• The text mentions the use of titanium frameworks for 3D ear construction.

Anatomical Details About Rat Ears

• The rat's ear is made up of the outer, middle, and inner ear.
• The pinna is the long flexible fold of the outer ear.
• Rats can hear ultrasound (around 200 Hz to 80 kHz).