There is no scientific term or concept known as "photoblastic cells." It's possible that the term is a misunderstanding or a mispronunciation of a related term.

Here are some possible explanations and related terms:

* Photoblastic seeds: This term refers to seeds that require light for germination. This is a common occurrence in many plant species, and the light sensitivity is typically mediated by phytochrome, a light-sensitive pigment.

* Photoreceptors: These are specialized cells or structures that detect light. They are found in various organisms, including animals (e.g., rod and cone cells in the retina) and plants (e.g., phototropin, cryptochrome).

* Photosynthetic cells: These are cells that contain chlorophyll and are responsible for photosynthesis, the process of converting light energy into chemical energy.

If you can provide more context about where you encountered the term "photoblastic cells," I might be able to offer a more precise answer.