Figure 2 : The female (a,b) and male (c,d) mammary glands according to whole mount Carmine alum
stain.

(a): Showing extensively branching lactiferous duct (arrow head) in an apparent mass of fat pad (fp).
The primary ducts (arrows) are slightly thick and relatively short. The secondary ducts (double arrows)
are thin and long. The tertiary ducts (curved arrows) are numerous, long, very thin and nearly formed
the ductal tree. [Carmine Alum stain, X10. Bar, 1.2mm].
(b): Showing a thin long tertiary duct (arrow) bifurcating into subtending ducts (st) which bifurcates into
long thin terminal ducts (arrow heads) interlacing with fat pad (fp). [Carmine Alum stain, X40. Bar,
2.4mm].
(c): Showing less branched ductal tree in a little mass of fat pad (fp) nearly reached the edge (arrow
heads). The primary, secondary and tertiary ducts are indistinct and nearly of the same thickness and
length while the terminal ducts are well defined (arrows). [Carmine Alum stain, X10. Bar, 1.2mm].
(d): Showing thick subtending ducts (st) arborized into irregular outlined short ducts that end as small
lobules (arrows). Their walls have irregular tiny lateral lobulation (arrow heads). [Carmine Alum stain,
X40. Bar, 1.8mm].

Gouda et al.Journal of Histology & Histopathology  2015 2:5DOI : 10.7243/2055-091X-2-5