Tubercles are the attachment point for spines on the test. They come in many shapes but all are constructed along the same basic plan. There is a ball-like mamelon (m) at the centre, which is the ...

Ambulacral plates trigeminate, with broad poriferous zones. Pore pairs arranged into three, almost straight, vertical series, separated by secondary tubercles decreasing in size towards the apical ...

Choroidal tubercles were one of the first signs described in intraocular TB. Clinical manifestations of intraocular TB are protean with wide spectrum. If untreated, a choroidal tubercle may grow ...