Question: What has recently been considered its own subdiscipline?
About the article "Physiology", section "History".

Candidate passages:
In the study of linguistics, abstract biocommunication theory may be considered to be a form of biosemiotics, and a subdiscipline of semiotic theory.
Accordingly, syntactic, semantic, and pragmatic aspects of biocommunication processes are distinguished.
Biocommunication specific to animals (animal communication) is considered a branch of zoosemiotics.
The semiotic study of molecular genetics, can be considered a study of biocommunication at its most basic level.
The scientific study of biocommunication as a subfield of semiotics has been introduced by Thomas A. Sebeok, and currently developed by the International Society for Biosemiotic Studies although they never used the term biocommunication. 
Key texts.
The emergence of critical geopolitics.
Critical geopolitics is an ongoing project which came to prominence when the French geographer Yves Lacoste published 'La géographie ça sert d'abord à faire la guerre' ('geography is primarily for waging war') (1976) and founded the journal "Hérodote".
The subject entered the English language Geography literature in the 1990s thanks in part to a special "Critical Geopolitics" issue of the journal "Political Geography" in 1996 (vol.
15/6-7), and the publication in the same year of Gearóid Ó Tuathail's seminal "Critical Geopolitics" book.
The subdiscipline is most commonly associated with a group of 'dissident' academics including John Agnew, Simon Dalby and, primarily, Ó Tuathail.
Ó Tuathail's 1996 book "Critical Geopolitics" defined the state of the subdiscipline at the time, and codified its methodological and intellectual underpinnings.
Subsequently, the definition of critical geopolitics has been broadened such that the project is no longer associated solely with the works of a small number of scholars. 
Evolutionary biology, as an academic discipline in its own right, emerged during the period of the modern evolutionary synthesis in the 1930s and 1940s.
It was not until the 1970s and 1980s, however, that a significant number of universities had departments that specifically included the term "evolutionary biology" in their titles, often in conjunction with ecology and behavior.
In the United States, as a result of the rapid growth of molecular and cell biology, many universities have split (or aggregated) their biology departments into "molecular and cell biology"-style departments and "ecology and evolutionary biology"-style departments (which often have subsumed older departments in botany, zoology and the like).
The subdiscipline of paleontology is often found in earth science/geology/geoscience departments.
Microbiology has recently developed into an evolutionary discipline.
It was originally ignored due to the paucity of morphological traits and the lack of a species concept in microbiology.
Now, evolutionary researchers are taking advantage of our extensive understanding of microbial physiology, the ease of microbial genomics, and the quick generation time of some microbes to answer evolutionary questions.
Similar features have led to progress in viral evolution, particularly for bacteriophages. 
Feminist anthropology is a four field approach to anthropology (archeological, biological, cultural, linguistic) that seeks to reduce male bias in research findings, anthropological hiring practices, and the scholarly production of knowledge.
Simultaneously, feminist anthropology challenges essentialist feminist theories developed in EuroAmerica.
While feminists practiced cultural anthropology since its inception as an American discipline (see Margaret Mead and Hortense Powdermaker), it was not until the 1970s that feminist anthropology was formally recognized as a subdiscipline of anthropology.
Since then, it has developed its own subsection of the American Anthropological Association, The Association of Feminist Anthropologists, and its own publication "Voices". 
Fluid mechanics is a subdiscipline of continuum mechanics, as illustrated in the following table.
In a mechanical view, a fluid is a substance that does not support shear stress; that is why a fluid at rest has the shape of its containing vessel.
A fluid at rest has no shear stress.