Fibroblasts play a central role in maintaining healthy tissue structures, as well as in the development and progression of ...

Dissolved sugars and amino acids can be transported both up and down the stem. Companion cells, adjacent to the sieve tubes provide energy required to transport substances in the phloem.

Dissolved sugars and amino acids can be transported both up and down the stem. Companion cells, adjacent to the sieve tubes provide energy required to transport substances in the phloem.

Researchers have coaxed stem cells to grow into amniotic sacs filled with fluid 1. The model sacs, which grew to roughly the ...