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A STUDY ON THE PITUITARY GLAND OF THE JUVENILE MUGIL SO-IUY |
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The whole brain with the pituitary gland intact was fixed in Bouin-Susa’s solution for 24 hr. Thcy were dehydrated by graded ethanal and finally embedded in paraffin wax. The gland was subscqently serially sectioned at 5-7micron thickness. The sections were stained by the following standard techniques. 1. Azan. 2. combined stain for fish pituitary. 3. PAS-celestin blue. 4. Aldehyde-thion-PAS-luxol fast blue. 5. Lced haematoxylins. 6. Halmi’s aldehyde fuchsin. The pituitary gland of juvenile Mugil so-iuy can be divided into three regions by the types of the component cells, i. c. pro-meso-and meta-adenohypohysis contains two hormone -secreting cells, prolactin cells and corticotrophs; Mcso-adenohypophysis contains four hormone-secreting cells, somatotrophs, thyrotrophys and two gonadotropcs; Meta-adenoh ypo-physis contains two hormone-secreting cells, which may be the source of MSH. |
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