T cell migration occurs to tonsil occurs at intrauterine age of:: (A) 6 - 7 weeks, (B) 10 - 11 weeks, (C) 14 - 15 weeks, (D) 18 - 19 weeks
Answer is D. Ans: d (18-19 wks)Ref: Human Embryology by I B Singh, 8th edi., Pg. 147\IU ageDevelopmental events4 weeks2 lateral lingual swellings & tuberculum impar5 weeksHypobranchial eminence6 weeksDental lamina of upper & lower jaw7 weeksSalivary glands8 weeksEnamel organs3 monthsFormation of tonsil5 monthsTonsil infiltrated by lymphatic tissue6 monthsTongue formation complete