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Book Contents

Histopathology and Cytology of
Poultry Diseases
By Ivan Dinev, DVM, PhD


MAREK’S DISEASE

Fig. 1. Symmetrical neoplastic foci of
pleomorphic cells, liver, hen. H/E, Bar
= 50 µm.

Fig. 1. Symmetrical neoplastic foci of pleomorphic cells, liver, hen. H/E, Bar = 50 µm.

 
Fig. 2. Acute (visceral) form, liver, hen.
Lymphomatous lesions, mainly consisting
of lymphoblasts, and small to
medium-sized lymphocytes. Among
the proliferate, single plasmatic and
reticular cells are outlined. H/E, Bar
= 10 µm.

Fig. 2. Acute (visceral) form, liver, hen. Lymphomatous lesions, mainly consisting of lymphoblasts, and small to medium-sized lymphocytes. Among the proliferate, single plasmatic and reticular cells are outlined. H/E, Bar = 10 µm.

 
Fig. 3. Marek’s disease, pullet, touch
imprint preparation of a liver crosssection.
Lymphoid cells of a various
size: lymphoblasts and lymphocytes.
Diff Quik, Bar = 10 µm.

Fig. 3. Marek’s disease, pullet, touch imprint preparation of a liver crosssection. Lymphoid cells of a various size: lymphoblasts and lymphocytes. Diff Quik, Bar = 10 µm.

 
Fig. 4. Muscle tumour, Marek’s disease.
Focal pleomorphic cell proliferation.
H/E, Bar = 35 µm.

Fig. 4. Muscle tumour, Marek’s disease. Focal pleomorphic cell proliferation. H/E, Bar = 35 µm.

 
Fig. 5. Diffuse pleomorphic cell proliferation
in the myocardium, resulting
in atrophy of myofibrils. H/E, Bar =
35 µm.

Fig. 5. Diffuse pleomorphic cell proliferation in the myocardium, resulting in atrophy of myofibrils. H/E, Bar = 35 µm.

 
Fig. 6. Pleomorphic cell proliferation,
ovary, hen. H/E, Bar = 25 µm.

Fig. 6. Pleomorphic cell proliferation, ovary, hen. H/E, Bar = 25 µm.

 
Fig. 7. Intertubular, pleomorphic cell
proliferation, testis, cock. H/E, Bar =
30 µm.

Fig. 7. Intertubular, pleomorphic cell proliferation, testis, cock. H/E, Bar = 30 µm.

 
Fig. 8. Diffuse pleomorphic cell proliferation
in the proventriculus mucous
coat (arrow), hen. Compression and
atrophy of glandular acini. H/E, Bar
= 40 µm.

Fig. 8. Diffuse pleomorphic cell proliferation in the proventriculus mucous coat (arrow), hen. Compression and atrophy of glandular acini. H/E, Bar = 40 µm.

 
Fig. 9. Peripheral nerve. A-type lesion
(neoplastic type), marked lymphoid
cell proliferation, absence of oedema.
H/E, Bar = 25 µm.

Fig. 9. Peripheral nerve. A-type lesion (neoplastic type), marked lymphoid cell proliferation, absence of oedema. H/E, Bar = 25 µm.

 
Fig. 10. Peripheral nerve, B-type lesion
(mostly inflammatory type).
Interneuritic inflammatory oedema
and slight to moderate proliferation
of lymphocytes and plasmatic cells,
rarely lymphoblasts. The mild version
of B-type lesions is called C-type. H/E,
Bar = 25 µm.

Fig. 10. Peripheral nerve, B-type lesion (mostly inflammatory type). Interneuritic inflammatory oedema and slight to moderate proliferation of lymphocytes and plasmatic cells, rarely lymphoblasts. The mild version of B-type lesions is called C-type. H/E, Bar = 25 µm.

 
Fig. 11. Case of focal myelocytic proliferation
of the sciatic nerve, hen.
Bar = 25 µm.

Fig. 11. Case of focal myelocytic proliferation of the sciatic nerve, hen. Bar = 25 µm.

 
Fig. 12. Lymphoid cell proliferations
in the iris and ciliary muscles in the
ocular form of Marek’s disease. H/E,
Bar = 50 µm.

Fig. 12. Lymphoid cell proliferations in the iris and ciliary muscles in the ocular form of Marek’s disease. H/E, Bar = 50 µm.

 
This book is protected by the copyright law. The reproduction, imitation or distribution of the book in whole or in part, in any format (electronic, photocopies etc.) without the prior consent, in writing, of copyright holders is strictly prohibited.

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