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|-style="font-variant:small-caps;border-bottom:1px solid black;font-size:144%;" |colspan=8|Bruce's Classification of Pathogenic African Trypanosomes |-style="font-variant:small-caps;" |  || style="border-left:1px solid black;border-right:1px solid black;border-bottom:1px solid black;"|Form ||style="border-bottom:1px solid black;"|Cytoplasm ||style="border-left:1px solid black;border-right:1px solid black;border-bottom:1px solid black;"|Micro-
nucleus ||style="border-bottom:1px solid black;"|Undulating
Membrane ||style="border-left:1px solid black;border-right:1px solid black;border-bottom:1px solid black;"|Movement ||style="border-bottom:1px solid black;"|Development in
Tse-Tse ||style="border-left:1px solid black;border-bottom:1px solid black;"|Susceptible
animals |-style="border-bottom:1px solid black;vertical-align:text-top;" |A.
Trypanosoma Brucei Group,
including
T. Brucei—T. Gambiensi
T. Evansi
T. Equiperdum ||style="border-left:1px solid black;border-right:1px solid black;"|Polymorphic
including
short and
stumpy
forms ||Contains dark-
staining
granules ||style="border-left:1px solid black;border-right:1px solid black;"|Small and
as a rule, at
some distance
from posterior
end ||Well
developed
and in
bold folds ||style="border-left:1px solid black;border-right:1px solid black;"|Active ||Completed in
salivary glands ||style="border-left:1px solid black;"|Many species of
mammals |-style="vertical-align:text-top;" |B.
Trypanosoma Pecorum Group,
including T. Pecorum
T. Simiæ ||style="border-left:1px solid black;border-right:1px solid black;"|Mono-
morphic
and small ||Non-
granular ||style="border-left:1px solid black;border-right:1px solid black;"|Prominent
and sub-
terminal ||Well
developed ||style="border-left:1px solid black;border-right:1px solid black;"|Active ||Completed in pro-
boscis and hypo-
pharynx.
Never found in
salivary glands ||style="border-left:1px solid black;"|Cattle—very fatal
to pigs |-style="border-top:1px solid black;vertical-align:text-top;" |C.
Trypanosoma Vivaz Group,
including T. Vivax
T. Capræ
T. Uniformi ||style="border-left:1px solid black;border-right:1px solid black;"|Mono-
morphic ||Non-
granular ||style="border-left:1px solid black;border-right:1px solid black;"|Large and
terminal ||Little
development
and simple ||style="border-left:1px solid black;border-right:1px solid black;"|Very rapid ||Completed in pro-
boscis and hypo-
pharynx.
Never found in
salivary glands ||style="border-left:1px solid black;"|Affects only horse,
cattle, goats and
sheep.
Ordinary laboratory
animals immune |}