Dr. LeBars said more studies were needed to find out if it would really be of use in treating dementia.
He said more studies were needed to find out how common the virus is and how it is being transmitted.
Dr. Smith said in a statement that additional studies were needed to understand the complications.
Crawford said much longer term studies were needed to confirm the extent of any effect of omega-3 on children's brains at school age.
He said more studies were needed to work out what level of ocean warming in the region would provoke another collapse.
In a telephone interview, she said further studies were needed to see whether the connection between aspirin and the cancer was real.
But Dr. Gundry said surgical techniques had changed since then, and he thought long-term results would improve, though more studies were needed to find out.
"This is preliminary, the first study of its kind," Dr. Miller said, emphasizing that more studies were needed to verify his results.
Wanda Lucibello, chief of the Special Victims Division in the Brooklyn district attorney's office, said more studies were needed to examine where the law and social needs intersect.
But he added that while the results from Tranquillo's animal studies were promising, larger studies were needed to learn whether the vessels could be used in people.
However, they stressed that further studies were needed to determine if those fluids could transmit the infection.
