Shennan, N.

cosmid chromosome fragment ecori sequence research hindiii acids research genome clone analysis cosmid library number chromosome 17 library agarose marker cos 63 cos 16 /sali vector hybridised restriction filter order chromosome 17 cosmids mapping ecori /sali dna sequences linkage agarose gel electrophoresis 40 kb grosveld screening digest mouse 1.8 construction williamson length overlap pctba program technique london hindiii /sali mouse background cell hybrids coding genes monte carlo science linkage map cos 67 lambda dna coulson nematode genome 1.7 colony probability alu sequences sau 3a chromosomal dna fragments method hybridisation base pairs 42 kb approach insert cos 24 enzyme electrophoresis thymidine kinase overlap map polymorphic robert williamson 1 u.s.a region restriction fragment map rodent cell lines