Its capability to image complex samples, including stem cell aggregates, extends its application beyond individual cells.

They could thereby assemble the chlorophyll molecules into two different forms, namely columnar stacks and discrete aggregates, mimicking the circular and tubular arrangements seen in photosynthetic bacteria.

"The process is called sintering, which aggregates fine particles together into a more solid state. It is similar to powder metallurgy in the manufacturing of ceramics," continues Tsumori.

The presence of IL-38 in these aggregates is enhanced close to the skin's surface exposed to atmospheric oxygen.

These accumulate and can form aggregates inside the cell.