The low degree of differentiation in the replacement growth patterns might be the consequence of less reciprocal interactions between cells from the desmoplastic stroma and epithelial tumour cells.
At an earlier stage, economics emphasized the role of "efficiency wage" (Shapiro and Stiglitz 1984), but later, economists made substantial theoretical revisions to add social and relational elements to their models (Akerlof and Yellen 1986), emphasizing that these elements, often extracontractual, make the contract-based labor exchange more or less reciprocal.
West Bengal writers like Sunil Ganguly and Samaresh Majumdar are popular in Dhaka, but far less reciprocal space has been created in Kolkata for bestselling Bangladeshi novelists like Humayun Ahmed and Imdadul Haq Milon.
This is contrast to communication edges, which have continuous weights and in which relations can be more or less reciprocal but almost never completely asymmetric [20].
For Gila topminnows, we found no mtDNA variation within or between these populations, much less reciprocal monophyly.
However, those with more transactional relationships, perceived as less reciprocal, more often expressed a desire to leave and have more autonomy.
As a result, it does not appear unexpected that there is no mtDNA variation, much less reciprocal monophyly, while there is substantial variation and differentiation for microsatellite and MHC loci.
Calhoun [ 42] states that in case of the Balkans "ethnic or national solidarities may be created not only with the purpose of engaging groups in conflicts as a matter of exclusion by the powerful, but, as well, they may serve as a resource for collective and reciprocal support among the less powerful and disadvantaged groups".
The reciprocal guilt and needs of father and son, which Mr. Wilson has explored more subtly in subsequent works, are among the less persuasive aspects of "Jitney".
On the nuclear issue, both seem unwilling to engage in direct talks, much less make reciprocal concessions.
