Abstract: A bioink comprises a cell solution comprising living cells and a cell culture medium, and a self-assembling peptide solution comprising a self-assembling peptide. The bioink is formed by mixing and extruding the cell solution and the self-assembling peptide solution together, and the bioink can be continuously extruded from the mixer after mixing. Useful methods of making bioinks and are also disclosed.

Abstract: A jammed gel bioink comprises a self-assembling peptide solution comprising a self-assembling peptide, and a cell solution comprising living cells and a cell culture medium. The self-assembling peptide solution is extruded to form an object, and then the cell solution is injected into the object. Useful methods of making the jammed gel bioink are also disclosed.

Abstract: A ligand of Formula (A): or a carboxylate salt thereof; wherein Y1, Y2 and Y3 each independently represents —COOH or a picolinate of Formula (i): wherein each R1 independently represents a chromophore group; L1, L2 and L3 each independently represents a single bond or a linker; and X1, X2 and X3 each independently represents a hydrogen atom, a coupling function or a bio-vectorizing group. Also, a process for manufacturing the ligand and to a process for manufacturing a chelate by complexation by the ligand of a rare-earth cation, preferably a lanthanide cation. Further, a use of the ligand and/or the chelate in biological imaging and/or photoluminescence imaging.