What structures do the imaginal discs form?

What structures do the imaginal discs form?

An imaginal disc is a sac-like epithelial structure found inside the larva of insects that undergo metamorphosis. Once the larva turns into a pupa, almost all the larval tissues degenerate and the imaginal discs turn into the external structures of the head, thorax, limbs and genitalia.

Where do imaginal cells come from?

Abstract. Imaginal disks are epithelial structures characteristic of insects that undergo complete metamorphosis. These epithelia originate during embryonic development from groups of ectodermal cells that grow during the larval stages to form the mature disk.

What are imaginal tissues?

What is an imaginal disc and what makes it unique from the rest of the cells on Earth?

Do humans have imaginal cells?

There is a sense of darkness and impending doom. From within the dying population, a new breed of cells begins to emerge, called imaginal cells. (aka YOU!) And yet everywhere, you and other human imaginal cells are awakening to a new possibility.

How do imaginal cells work?

At first these imaginal cells – the seeds of future potential, which contain the blueprint of a flying creature—operate independently as single-cell organisms. The imaginal cells form clusters and clumps, begin resonating at the same frequency and passing information back and forth until they hit a tipping point.

How are imaginal discs dissected from third-instar larvae?

Imaginal discs (eye-antennal discs or wing discs) with genetically manipulated somatic clones (labeled with fluorescent proteins) are dissected out from third-instar larvae in phosphate-buffered saline (PBS) and are set on the prepared chambers as follows: 1. Dissect larvae in PBS and take imaginal discs out from the larvae using forceps. 2.

What are imaginal disks?

Imaginal disks are epithelial structures characteristic of insects that undergo complete metamorphosis. These epithelia originate during embryonic development from groups of ectodermal cells that grow during the larval stages to form the mature disk.

How to tell if a disc has been fixed properly?

If the tissue has been fixed properly then the morphogenetic furrow of the eye disc, the edges of the concentric tissue folds in the genital, antennal and leg discs, and the dorsal-ventral axis of the wing and haltere discs will all appear as sharp edges.

What is the cis-regulatory region of the imaginal disk in decapentaplegic?

Blackman RK, et al. An extensive 3′ cis-regulatory region directs the imaginal disk expression of decapentaplegic, a member of the TGF-b family in Drosophila. Development. 1991;111:657–665. [PubMed] [Google Scholar]