Difference between revisions of "Microorganisms"

Microorganisms (view source)

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 ==Worms & stuff==
+==Toxoplasma==
+===General===
+*Common CNS infection.
+===Microscopic===
+General:
+*Dependent on location in body.
+Lymph node - features:<ref name=Ref_ILNP113>{{Ref ILNP|113}}</ref>
+*Reactive germinal centers (pale areas - larger than usual).
+**Often poorly demarcated - due to loose epithelioid cell clusters at germinal center edge - '''key feature'''.
+*Epithelioid cells - perifollicular & intrafollicular.
+**Loose aggregates of histiocytes (do not form round granulomas):
+***Abundant pale cytoplasm.
+***Nucleoli.
+*Monocytoid cells (monocyte-like cells) - in cortex & paracortex.
+**Large cells in islands/sheets '''key feature''' with:
+***Abundant pale cytoplasm - '''important'''.
+***Well-defined cell border - '''important'''.
+***Singular nucleus.
+**Cell clusters usually have interspersed neutrophils.
+Images (lymph node):
+*[http://commons.wikimedia.org/wiki/File:Toxoplasmosis_lymphadenopathy_-_low_mag.jpg Toxoplasmosis - low mag. (WC)].
+*[http://commons.wikimedia.org/wiki/File:Toxoplasmosis_lymphadenopathy_-_high_mag.jpg Toxoplasmosis - high mag. (WC)].
+Image (CNS):
+*[http://moon.ouhsc.edu/kfung/jty1/opaq/PathQuiz/N0I001-PQ01-M.htm CNS toxoplasmosis].
 ==Strongyloides==