Shoots Lasers

A disposable living laser printed on chip for drug screening

Mar 2021, phys.org

https://phys.org/news/2021-03-disposable-laser-chip-drug-screening.html

Sounds to me like a 3-D printed, engineered bacteria that shoots lasers:

disposable living laser on chip by encapsulating living bacteria inside. Strong laser emissions generated from bacteria inside the droplet will be dramatically enhanced during drug interactions.

The tiny lasers serve as a highly sensitive culture-free sensor

can be directly printed from an office inkjet printer

via Nanyang Technological University: Xuerui Gong et al. Imaging-Based Optofluidic Biolaser Array Encapsulated with Dynamic Living Organisms, Analytical Chemistry (2021). DOI: 10.1021/acs.analchem.1c00020

Image credit: Quantum Causal Loop - NeoLeo