2 A: Dermis showing sheets of atypical lymphoid cells
of intermediate to large size with brisk mitotic activity (hematoxylin & eosin staining [H&E] x400); B: Sheets of atypical lymphoid cells
replacing testicular parenchyma showing frequent mitoses (H&E x400), inset--residual entrapped seminiferous tubules in the tumour (H&E x200); C: Tumour cells showing positivity for leukocyte common antigen (x400); D: Tumour cells showing positivity for CD20 (x400).
Neoplastic lymphoid cells
were diffusely immunohistochemically positive for CD30 and focally positive for CD3 (a T-cell marker) and epithelial membrane antigen.
Such diseases involve activation of both Th2 lymphocytes and type 2 innate lymphoid cells
and are often associated with elevation in the numbers of eosinophils in both blood and target tissues.
Innate lymphoid cells
were recently described by the scientific community and represent the first line of immunological defence on our body surfaces, which are constantly exposed to bacteria, such as the intestine or skin.
The lipotrophic infiltrate is composed of small to intermediate-sized lymphoid cells
admixed with histiocytes, and is frequently associated with areas of fat necrosis.
Large centroblastic-type and polymorphic lymphoid cells
were interpreted as MALT lymphoma transforming to DLBCL (Figure 2).
were separated from blood over Ficoll-paque[R] (phamacia Fine Chemicals, Upsalla, Sweden) and the lymphoid organs by teasing in sterile-phosphate buffered saline (PBS) supplemented with 5% by volume of fetal calf serum (FCS) using a sterile pair of forceps.
The lymphoid cells
and tissues of vertebrates constitute the immune defence mechanism (Finstad et al.
Histology revealed transmural infiltration of the gall bladder with small lymphoid cells
, which on immunohistochemistry were positive for CD20 with aberrant expression of CD5 (9).
The term 'lymphoma' refers to malignant proliferation of lymphoid cells
, usually in association with and arising from lymphoid tissues (i.
It is a neoplastic disorder of the lymphatic system characterised by proliferation of lymphoid cells
Numerous cytoplasmic particles were observed in cells obtained by bronchoalveolar lavage, and a lung biopsy showed peribronchiolar infiltration of lymphoid cells
, foreign-body-rype granulomas, and alveolar macrophages that contained numerous round and elongated platelike particles.