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This column has previously focused on African-American genealogy blogs, in the articles Shout-outs to African-American Genealogy Blogs and More shout-outs to African-American genealogy blogs. A third edition soon forthcoming will spotlight several new genealogy blogs. The responsible genealogist, however, would be advised to learn more about United States history, including how it affected African-Americans. History blogs are a vital source for keeping up with current perspectives as well as newly available historical resources, many of which may provide genealogically useful information.

"The new WPI MICRO-ePORE™ pinpoint cell penetrator is a simple and versatile system that can be used for efficient microinjection of a diverse array of compounds and biomolecules into oocytes and pre-implantation stage mammalian embryos. Patent pending Flutter Electrode Technology assists in small, clean, precise membrane penetration without tearing or damaging the membrane. Benefits Increase viability of injected embryos Flexible system Integrates with WPI's PV820/PV830, as well as other popular microinjection systems, like the Eppendorf Femtojet® and the Narishige injectors (Femtojet® 4I is a registered Trademark of Eppendorf.) Microinjection of diverse compounds and biomolecules - DNA, RNA, proteins Pre- and post-implantation in embryos of various species - mice, rodents, monkeys, bovine, pigs, zebrafish, etc. Easy to operate - Hands-free operation with foot switch control User adjustable frequency and voltage - four programmable protocols Small, portable unit saves precious benchtop space Works with all major inverted microscopes"

A transgenic animal is one whose genome has been altered by the transfer of a gene or genes from another species. In biomedical research, in the laboratory, transgenic animals are routinely used as models. Over 95 percent of those users are genetically modified rodents, predominantly mice. Transgenic animals have many Utilities which made them much superior to the normal animals. Utilities of Transgenic Animals: * During medical research, transgenic animals are mostly used to identify the functions of some specific factors in complex homeostatic systems. These can be through the over- or under-expression of a modified gene (the inserted transgene). * In the toxicology as the responsive test animals for the detection of toxicants. * In mammalian developmental genetics. * In molecular biology, this analysis of the regulation of the gene expression, make use of the informative evaluation of some specific genetic change, at the level of the whole animal. * While in the pharmaceutical industry, for the targeted production of pharmaceutical proteins, and during the drug production also on the product efficacy testing. * In biotechnology, as producers of specific proteins. * For the genetically engineered hormones to increase milk yield, meat production. * In the cloning procedures to reproduce some specific bloodlines in the genetic engineering of the livestock, and in the aquaculture that affects the modification of animal physiology and/or anatomy, * Developing animals specially created for use in xenografting.