Lymphocytes are a population consisting of both B- and T-lymphocytes. In blood smears they have the same morphology. One can see both small (slightly larger than an Rbc 7-8 um) and medium to large (up to 12 um); these represent inactive and activated lymphocytes respectively.
Spruces are large trees, from about 20â60 metres (about 60â200 feet) tall when mature, and can be distinguished by their whorled branches and conical form. The needles, or leaves, of spruce trees are attached singly to the branches in a spiral fashion, each needle on a small peg-like structure.
Lumber (American English; timber in Australian English, British English, Hiberno-English, and New Zealand English) is wood that has been processed into beams and planks, a stage in the process of wood production.Lumber may be supplied either rough-sawn, or surfaced on one or more of its faces.inished lumber is supplied in standard sizes, mostly for the construction industryâ primarily softwood, from coniferous species, including pine, fir and spruce (collectively spruce-pine-fir), cedar, and hemlock, but also some hardwood, for high-grade flooring.