Cartilage and bone

To begin with, here is fetal cartilage made up of stellate mesenchymal cells
The initial chondroid matrix is pink, but becomes blue due to deposition of hyaluronate

This is mature, hyaline cartilage, the cells still remain stellate

And enchondral ossification (note the transition from blue to pink)

A periosteal osteosarcoma; predominantly cartilage, with a few mesenchymal cells making bone

Mesenchymal chondrosarcoma

Granuloma: The eternal golden braid

Colon

From a case of suspected Crohn's disease/ TB. Note absence of necrosis.

Skin

BT leprosy. Granuloma around a follicle.

Lymph node

A lymph node granuloma on cytology

Another node

Another node in a child

More nodes

Epididymis

Omentum

A granuloma in omentum; extensive epithelioid change, undergoing keratinisation !

Another omentum

Langhans giant cell

Bone marrow