Identify the type of colony you are dealing with.
Although the two types of cells showed a significant difference in Kit expression level, GFRα1, a marker for A single (As) and A paired (Apr) spermatogonia, and E-cadherin, a marker for undifferentiated spermatogonia [3], were expressed at comparable levels regardless of the type of colonies.
If you use this method on a brand new colony where the queen has just mated and is still digging out her nest, then you won't have to dig very far, and you won't have much to sift through to find her.[14] Telltale signs for this type of brand new colony include a very small entrance hole with a small heap of fresh dirt beside it that hasn't yet been formed into a mound.[15].
This type of screening at cell colony stage (I) was repeated at the differentiation stage (II) when shoot induction is initiated and at the plantlet stage (III) for 10 responsive lines, as summarized (Table 1).
The inhibition of colony formation in this type of assay can be explained by either a block in the cell cycle or induction of cell death.
Colonies collected had different species compositions, but community structures exhibited no significant variations with vent field (9°N/13°N), deployment duration (< or >1 month), or type of colony.
Instead, as Patricia Click demonstrates in her book "Time Full of Trial: The Roanoke Island Freedmen's Colony, 1862-1867," the island soon became home to a new sort of patriot and a new type of colony: an enormous settlement of freedpeople.
When protoplasts were obtained from the variants homokaryon A, heterokaryotic parent or the variant type of colony morphology was found among the protoplast regenerants of each variant (Table 9).
The least frequent type of colony formed small nests that were comprised of epithelial cells positive for CK, an endometrial epithelial marker (Figure 3C).
The two types of cells are easily distinguished under the microscope and each gives rise to a specific type of colony easily distinguished by the naked eye [for reviews see 2] [4].
