Microvessels, microparticles, and methods of manufacturing and using the same

A plurality of isolated microvessels comprising:

• (a) a plurality of encoded microvessels each comprising a microbody and a reservoir cavity in the microbody, wherein the microbody separates a biological or chemical substance in the reservoir cavity from an ambient environment surrounding the microbody, the microbody comprising a transparent material that facilitates detection of an optical characteristic of the substance within the reservoir cavity, wherein the microbody of each microvessel further includes an identifiable code that distinguishes individual microvessels of the plurality of encoded microvessels from each other, wherein each of the microbodies has an elongated structure that extends lengthwise between opposite ends of the corresponding microbody and includes an inner coding region that surrounds the reservoir cavity and an outer region that surrounds the inner coding region, the inner coding region having the identifiable code of the corresponding microbody formed therein;
• and
• (b) a plurality of compartments each configured to separate individual microvessels of the plurality of encoded microvessels from each other.