Protocol describes a method for collecting blastocysts from pregnant female mice at 3.5 to 4.5 days post coitum (dpc). The blastocysts can then be injected with embryonic stem cells to make chimeras. - [Read Collecting Blastocysts Protocol]
Isolation of extraembryonic tissues allows one to study normal mouse development as well as the molecular basis of defects which cause fetal death. This protocol describes a method for isolating extraembryonic membranes from pregnant mice. - [Read Isolating Mice Extraembryonic Membranes Protocol]
Protocol describes the determination of useful settings with the Sutter Puller P-97 to make injection pipettes for microinjection. - [Read Making Injection Pipettes Protocol]
Protocol describes a method for preparing siliconized pipettes. Such pipettes minimize the loss of embryos or embryonic tissues during transfer. - [Read Preparing Siliconized Pipettes Protocol]
Protocol provides methods and tips for sectioning mouse embryos and transferring the sections to a microscope slide. - [Read Sectioning Mouse Embryos Protocol]
Blastocyst transfer is usually performed 24 hours after aggregation, when the morulae have become expanded blastocysts, and on the same day as injection. A little time is given between injection and transfer to allow the blastocysts to re-expand. Includes: The Mouse Recipient; The Transfer. - [Read Transfer of Injected Blastocysts to Pseudo Pregnant Mice Protocol]