Building upon these observations, we subsequently turned our focus to the conjugation of molecules to PEGMA-N3. The presence of azide groups on PPEGMA provides a powerful tool for the attachment of various functional molecules via click chemistry, further extending application potential of these modified yeast cells. To demonstrate this, a clickable fluorescent dye (Cy5-dibenzocyclooctyne, Cy5-DBCO) was incubated with P10 cells and P13 cells. The successful conjugation was confirmed via confocal microscopy and flow cytometry (Figure , b, SI Figure ), where Cy5 fluorescence was detected on the surface of yeast. Flow cytometry showed a rather poor labelling efficiency suggesting a low incorporation of PEGMA-N3 into these copolymers (SI Figure ).