Renovations for the existing laboratory space on the second floor of the Biological Labs continue as displaced MCB professors make the move from Fairchild to Bio Labs.

Some members of the Department of Molecular and Cellular Biology have begun the long-awaited exodus out of their laboratories to make room for a centralized space for stem cell researchers.

Through a series of moves that will last until mid-May, MCB faculty members currently stationed in the Sherman Fairchild Biochemistry Building will vacate the premises to join other members of the department in the Biological Laboratories and the Northwest Science Building.

The transition is occurring more than a year after the University announced plans to relocate the Stem Cell and Regenerative Biology Department to Fairchild in response to the slowdown in Allston construction, where a new Science Complex had been heralded as SCRB’s future home.

After MCB leaves the building, Fairchild will be gutted and renovated to prepare for the arrival of the stem cell researchers, who hope to be operational for the fall of 2011, according to Kathryn L. Link, executive director of SCRB.

This past Monday, MCB began its move-out with Associate Professor of Biology Nicole Francis, when she vacated her laboratory in Fairchild and moved down the street to the second floor of the 79-year-old Bio Labs. These laboratories were recently renovated to fit the needs of the incoming MCB professors.

Next week, MCB Professors Sam Kunes and Matthew S. Meselson will follow suit and move into the second and fourth floor of the Bio Labs, respectively, according to MCB Executive Director of Administration Susan H. Foster.

In the following week, Foster said, four other MCB professors will move from their current space in Fairchild Labs  to the Northwest Building, a fairly new structure whose “shell” space has been  converted into functional laboratory spaces for their incoming occupants.

Despite months of planning, the move out of Fairchild Labs has not been without its share of obstacles.

For example, a collection of enzymes were lost during the move this week, which has the potential to slow down research in the lab, according to Foster.

“The folks that moved her freezers put her enzymes in the wrong kind of freezer, and those all had to be replaced,” Foster said.

Such complications, which will be addressed as the other biology professors make the transition into the new facility, “illustrate why it’s difficult to move a lab that’s a working lab,” Foster said. “The interruption in work can be devastating.”

The recent moves come after months of planning and renovating in response to the Feb. 2009 announcement that MCB professors in Fairchild would be uprooted in order to create a unified space for SCRB, whose constituents are scattered across the Harvard campus.

Following the news, many members of the MCB department expressed discontent with the prospect of a drastic transition that often felt like the result of a decision in which they had no input.

“We were absolutely not consulted on this,” said MCB Department Chair Catherine Dulac, who expressed concern that the limited space could hamper growth in the department. “And many people think that that was a poor decision.”

Meselson, whose laboratory has been stationed in Fairchild Labs for nearly 30 years, was instrumental in securing finances and construction plans for the building during his tenure as MCB department chair in the late 1970s.