A fibroblast is a type of cell that synthesizes the extracellular matrix and collagen, the structural framework (stroma) for animal tissues, and plays a critical role in wound healing.Fibroblasts are the most common cells of connective tissue in animals.ibroblasts and fibrocytes are two states of the same cells, the former being the activated state, the latter the less active state, concerned with maintenance and tissue metabolism.
Longest-serving Representative to serve in the House: With more than 59 years of service, Representative John Dingell, Jr., of Michigan, holds the record for longest consecutive service. Longest-serving Speaker of the House: Sam Rayburn of Texas served as Speaker for a total of 17 years, two months, and two days. Oldest person recorded to have served in the House:
Feinstein and Boxer have been in office a while, but they're not yet California's longest-serving senators. Dianne Feinstein and Barbara Boxer have been senators for nearly a generation â but they're not yet California's longest-serving senators. Both would need to run for a fifth full Senate term to dethrone Hiram Johnson. And the current runner-up is Alan Cranston, who served four six-year terms. HIRAM JOHNSON.