<qa>  What is the name of the injection that is used to increase blood counts?To help increase the blood counts and help decrease the risk of developing infections, your doctor may decide that treatment with filgrastim is necessary. Filgrastim may be given as once-a-day injections under the skin starting 24 hours after the end of Day 4 vincristine Cycle 1 and starting 24 hours after the end of Cytarabine Cycle 2. Your blood counts will be monitored and filgrastim is stopped when the levels become normal. 