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Lineage commitment is a process in which CD4–CD8– (double negative) thymocytes differentiate to CD4– and/or CD8– T cells. 
The thymocytes that express both CD4 and CD8 surface markers are called as ________
Which of the following statement(s) is/are CORRECT for antigen activated effector T cells?
P. CD4+ cells make contact with macrophages and stimulate their microbicidal activity.
Q. CD4+ cells make contact with B cells and stimulate them to differentiate into plasma cells.
R. CD8+ cells make contact with B cells and stimulate them to differentiate into plasma cells.
S. CD8+ cells make contact with virus infected cells and kill them.
Read the given statements and conclusions carefully. Assuming that the information given in the statements is true, even if it appears to be at variance with commonly known facts, decide which of the given conclusions logically follow(1) from the statements Statements: a) Some sketch pens are ink pens b) Some pencils are markers c) All ink pens are markers Conclusions: I. Some markers are sketch pens II. Some sketch pens are pencils III. Some markers are ink pens
The Double Negative thymocytes express the surface markers ___________
In the following question below are given some statements followed by some conclusions. Taking the given statements to be true even if they seem to be at variance from commonly known facts, read all the conclusions and then decide which of the given conclusion logically follows the given statements. Statements: Some markers are a pen Some pens are a pencil No eraser are markers Conclusions: I. Some erasers are a pen. II. some pencils are a pen. III. Some markers are a pencil.
In the following question below are given some statements followed by some conclusions. Taking the given statements to be true even if they seem to be at variance from commonly known facts, read all the conclusions and then decide which of the given conclusion logically follows the given statements. Statements: Some staplers are pins. All pins are markers. Conclusions: I. Some staplers are markers. II. All markers are pins.
In the following question below are given some statements followed by some conclusions. Taking the given statements to be true even if they seem to be
at variance from comonly known facts, read all the conclusions and then decide which of the given conclusion logically follows the given statements.
Statements:
I. Some staplers are pins.
II. All pins are markers.
Conclusions:
I. Some staplers are markers.
II. All markers are pins.
Two trains Intercity express and Suvidha express start from Udaipur to Jaipur and Jaipur to Udaipur at the same time. Their speeds are 50 km/h and 100 km/h respectively. If a passenger travelling in Suvidha express reaches Ajmer in 2 hours and waits for his brother. Who is coming to Ajmer from Intercity express, if the distance between Udaipur to Jaipur is 350 km then find how many hours Suvidha Express passenger waits for his brother at Ajmer.
The distance between Delhi and Pune is 1000 km. Rajdhani express started at 6 am from Delhi to Pune and Shatabdi express started at 8 am from Pune to Delhi. Speed of Rajdhani express is half of that speed of Shatabdi express and Shatabdi express reached at 4 am on next day of its journey. When will the trains meet for the first time?