Microarray technology offers a spatially addressable array in a compact format. Cell based micro array technology allows the printing of viable cells in micron-sized hemispherical gel matrices. These cells can then be exposed to chemical or biological substances and probed with stains and antibodies or to monitor their functional state.
![A cell-based microarray on a microscope slide in which cells are entrapped in a hemispherical gel matrix](https://harc.rpi.edu/sites/default/files/styles/wide/public/2022-05/58ab5e12c6ab35.19393757_Page_5_Image_0002.jpg?itok=mnog3AKV)
Figure. A cell-based microarray on a microscope slide in which cells are entrapped in a hemispherical gel matrix