source: [lemma=physics] [lemma=□] □
destination: [lemma=physics] [lemma=at] □
spec: PCR with a primer specific to the P1 vector sequence near the cloning site and a inverted repeat primer can generate a product with a pool of mating transductants as template . Friesen also tried to obtain records that comply with these profiles , but the effort was largely unsuccessful because the sample size was small and not widely distributed across the profiles . [ It 's ] a way to sharpen a tube , just like sticking a pencil in a pencil sharpener , " said Alex Zettl , a professor of physics at UC Berkeley and senior scientist at Lawrence Berkeley National Laboratory . It 's a situation that delights theorists like Marvin Cohen and Steven Louie , professors of physics at UC Berkeley and members of the Lab 's Materials Sciences Division , who study the behavior of all sorts of materials-nanostructures prominent among them . " We have analyzed data from most of two impact basins on the lunar surface , Mare Imbrium and the Sea of Serenity , and remarkably the correlation that we first glimpsed on the Apollo missions 25 years ago still holds , " said Robert Lin , a professor of physics at UC Berkeley and one of the principal investigators for the magnetic mapping project .