infant stage 1.0 6.0 true mouse_developmental_stage This term was made obsolete due to discussion at https://github.com/obophenotype/developmental-stage-ontologies/issues/23. [ANiknejad] MmusDv:0000038 Immature stage that refers to a mouse which is over 1 week and under 6 weeks old. 1-5 weeks 1-week-old stage 2-week-old stage 21-day-old stage 22-day-old stage 23-day-old stage 24-day-old stage 25-day-old stage 26-day-old stage 27-day-old stage 4-week-old stage 5-week-old stage