Scientists generate retinal tissue from stem cells

Researchers have developed a method to generate multilayered retinal tissue from human embryonic stem cells. This tissue could potentially be used to treat retinal degenerative diseases. The process involves cultivating 9,000 stem cells into retinal tissue within two weeks, and further cultivation over eight weeks results in tissue containing rods and cones. Human transplantation trials are planned once the technique is refined. The project also improved methods to extend the viability of the tissues.

What is the primary goal of developing multilayered retinal tissue from embryonic stem cells?

• To enhance vision in healthy individuals

• To treat retinal degenerative diseases

• To improve color perception

• To create artificial eyes

How many embryonic stem cells are used to cultivate retinal tissue in the new method?

• 9,000

• 12,000

• 5,000

• 1,000

What is the duration required to transform embryonic stem cells into optic cup-sized retinal tissue?

• Two weeks

• Four weeks

• Six weeks

• One week

What additional feature does the multilayered retinal tissue contain after eight weeks of cultivation?

• Both rods and cones

• Only cones

• Only rods

• Neither rods nor cones

What is the next step the scientists hope to achieve with the developed technique?

• Publishing a research paper

• Commercial production of retinal tissue

• Human transplantation trials

• Animal testing