A CD 45RA

B CD45RB

C CD45RC

D CD45RO

A The brain

B The lesser omentum

C The skull

D The diaphragm

A Ankylosing spondylitis

B Rheumatoid ahritis

C Psoriasis

D Reiter's syndrome

A Lingual

B Hypoglossal

C Glossopharyngeal

D Facial nerve

A Ritodrine

B Isoprenaline

C Salbutamol

D Terbutaline

A Median umbilical fold is obliterated to become urachus in adults

B Medial umbilical fold is peritoneal fold on medial umbilical ligament

C Medial umbilical fold covers allantois

D Lateral umbilical fold produced by inferior epigastric vessels

A Celiac ganglia

B Vagus nerve

C Anterolateral column of spinal cord

D None of the above

A Primary spermatocyte

B Secondary spermatocyte

C Spermatid

D Spermatogonia

A Subclan aery

B External iliac aery

C Internal iliac aery

D External carotid A

A positive reinforcement

B negative reinforcement

C omission

D punishment