batches Protocols

Category: Xenopus Protocols: Xenopus Egg Extracts Protocols

Protocol for cytostatic factor extract preparation for spindle assembly. The quality of the eggs is essential for good CSF extracts. Always sacrifice quantity for quality when trying to make functional extracts. Discard any batches of eggs that have "puff balls" or activated eggs that constitute more than 10% of the eggs. Use laid eggs and collect eggs at about 16 to 17 hours after priming with Progesterone (found in Pregnant Mare Serum Gonadotropin (PMSG)). - [Read Cytostatic Factor (CSF) Extract Preparation for Xenopus Spindle Assembly Protocol]

Category: Bacterial Cell Culture Protocols: Fermentation Equipment

Method to restart stuck fermentation. Includes: Select and rehydrate active dry wine yeast; activate the rehydrated yeast with nutrients and sugar; start the fermentation and add the stock wine in batches. - [Read Method to Restart Stuck Fermentation]

Category: Bacteria Transformation Protocols

Protocol used to prepare batches of competent bacteria that yield 5 x 106 to 2 x 107 transformed colonies/µg of supercoiled plasmid DNA. - [Read Preparation and Transformation of Competent E. coli Using Calcium Chloride Protocol]

Category: E Coli Protocols: E coli Transformation Protocols

Protocol is is used to prepare batches of competent bacteria that yield 5 x 106 to 2 x 107 transformed colonies/µg of supercoiled plasmid DNA. - [Read Preparation and Transformation of Competent E. coli Using Calcium Chloride Protocol]