Abstract:
An acicular body includes a support plate having a brightness of 5.0 or less, and a needle disposed on the support plate. The needle includes a tip formed to pierce a skin and a light transmission area which is located in an area including the tip and has a total light transmittance of 20% or more.
Abstract:
A needle-shaped structure includes a needle-shaped projection and a support substrate supporting the projection wherein the projection contains at least a chitosan and an organic acid, places a low burden on a living body and is able to keep the microscopic form after puncture into the skin.
Abstract:
A needle-shaped structure includes a needle-shaped projection and a support substrate supporting the projection wherein the projection contains at least a chitosan and an organic acid, places a low burden on a living body and is able to keep the microscopic form after puncture into the skin.