Table 2.

Cellular types found in tuberculous granulomas

	Initial granuloma	Developed granuloma	Terminal granuloma
T lymphocytes	+	+	–
B lymphocytes	++	+++	++++
Macrophages	+++	++++	++
Plasma cells	–	++	+++

-: abscence of immunolabelled cells; +: 1–10 immunolabelled cells; ++: 11–50 immunolabelled cells; +++: 51–100 immunolabelled cells; ++++: > 100 immunolabelled cells