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Dibs Fall 2026

MCD BIO 50

Stem Cell Biology, Politics, and Ethics: Teasing Apart Issues

Lecture, three and one half hours; discussion, 90 minutes. Developmental biology of various types of human stem cells. Important functional differences between embryonic, hematopoietic, and adult stem cells, as well as differences in their biomedical potentials. Discussion of history of debate surrounding embryos, as well as various social, ethical, political, and economic aspects of stem cell research. P/NP or letter grading.

Course statistics

Predicted GPA
3.79
n = 1,112 · 11 terms · ± 0.016
A range
85%
of letter grades
Taken P/NP
2%
88% of those passed
D / F / W
0.7%
incl. withdrawals

Sections in Fall 2026

Sections offered, with live enrollment and predicted GPA
Section Status Enrolled Seat risk Meets Instructor Predicted GPA
Lec 1 Open
58 of 84
69% full
 fills TR 11:00am-12:15pm Lee, P.
3.78n=896 · this instructor

Enrollment history

Final enrollment per term, averaged across that term's sections. Four years deep, summer excluded. Per-section live curves are on each section page.

  • 11321F
  • 11822W
  • 7322S
  • 11822F
  • 11823W
  • 7423S
  • 11723F
  • 11424W
  • 7524S
  • 11524F
  • 10425W
Enrolment by term: 21F 113, 22W 118, 22S 73, 22F 118, 23W 118, 23S 74, 23F 117, 24W 114, 24S 75, 24F 115, 25W 104
Peak 118 Most recent 104 in 25W 11 terms on record

Grade distribution

  • A+ 50 · 4.4%
  • A 709 · 62.2%
  • A- 181 · 15.9%
  • B+ 80 · 7.0%
  • B 47 · 4.1%
  • B- 25 · 2.2%
  • C+ 9 · 0.8%
  • C 3 · 0.3%
  • C- 1 · 0.1%
  • D+ 4 · 0.4%
  • D 3 · 0.3%
  • P 23 · 2.0%
  • NP 3 · 0.3%
  • DR 1 · 0.1%

Grey bars are non-letter outcomes — P/NP, S/U, incompletes. They are excluded from the GPA entirely rather than scored, because counting a P as a 4.0 would be a fabrication.

By instructor

Instructor Predicted Raw n Terms A range
LEE, PEIYUN 3.78 3.78 896 8 84%
AUSTIN, TINA ROSA 3.82 3.82 216 3 85%

“Predicted” is shrunk toward the course average, which is itself shrunk toward the department — so an instructor with a handful of students sits near the course mean rather than topping the list.

By term