The goal of this stage is to introduce methyl groups that will modify and protect naturally occurring EcoRI sites in the double-stranded cDNA. - [Read Construction of cDNA Libraries Protocol.]
The goal of this method is to identify transcriptionally active genes in cloned segments of genomic DNA. The protocol uses hybridization and affinity purification to recover biotin-labeled cDNAs that bind to a 500-kb segment of human DNA cloned in a BAC vector. However, the method can be easily adapted to other clones of genomic DNAs cloned in high-capacity vectors. - [Read Direct Selection of cDNAs with Large Genomic DNA Clones Protocol]
Shotgun sequencing of a large segment of DNA involves random fragmentation of the target region into smaller segments that are subsequently cloned into a bacteriophage M13 vector. The goal is to create a library of overlapping clones that provide at least fivefold coverage over the entire length of the target fragment. - [Read Generation of a Library of Randomly Overlapping DNA Inserts Protocol]
T Cell Enrichment By Nonadherence to Nylon Protocol- https://catalog.invitrogen.com/index.cfm?fuseaction=iProtocol.unitSectionTree&treeNodeID=9E66363CC65D4418DAE176108087071E&objectid=667493A4BF337BA420CD91E90B60CA95
Protocol describes a convenient, although imprecise, means of enriching T cells through removal of accessory and B cells; use of nylon wool is preferred if both of the latter subsets are to be removed, while Sephadex is used when the goal is primarily to remove accessory cells. - [Read T Cell Enrichment By Nonadherence to Nylon Protocol]